Source code for sas.qtgui.Perspectives.Fitting.FittingWidget
import json
import os
import sys
from collections import defaultdict
import copy
import logging
import traceback
from twisted.internet import threads
import numpy as np
import webbrowser
from PyQt5 import QtCore
from PyQt5 import QtGui
from PyQt5 import QtWidgets
from sasmodels import generate
from sasmodels import modelinfo
from sasmodels.sasview_model import load_standard_models
from sasmodels.sasview_model import MultiplicationModel
from sasmodels.weights import MODELS as POLYDISPERSITY_MODELS
from sas.sascalc.fit.BumpsFitting import BumpsFit as Fit
from sas.sascalc.fit.pagestate import PageState
from sas.sascalc.fit import models
import sas.qtgui.Utilities.GuiUtils as GuiUtils
import sas.qtgui.Utilities.LocalConfig as LocalConfig
from sas.qtgui.Utilities.CategoryInstaller import CategoryInstaller
from sas.qtgui.Plotting.PlotterData import Data1D
from sas.qtgui.Plotting.PlotterData import Data2D
from sas.qtgui.Plotting.Plotter import PlotterWidget
from sas.qtgui.Perspectives.Fitting.UI.FittingWidgetUI import Ui_FittingWidgetUI
from sas.qtgui.Perspectives.Fitting.FitThread import FitThread
from sas.qtgui.Perspectives.Fitting.ConsoleUpdate import ConsoleUpdate
from sas.qtgui.Perspectives.Fitting.ModelThread import Calc1D
from sas.qtgui.Perspectives.Fitting.ModelThread import Calc2D
from sas.qtgui.Perspectives.Fitting.FittingLogic import FittingLogic
from sas.qtgui.Perspectives.Fitting import FittingUtilities
from sas.qtgui.Perspectives.Fitting.SmearingWidget import SmearingWidget
from sas.qtgui.Perspectives.Fitting.OptionsWidget import OptionsWidget
from sas.qtgui.Perspectives.Fitting.FitPage import FitPage
from sas.qtgui.Perspectives.Fitting.ViewDelegate import ModelViewDelegate
from sas.qtgui.Perspectives.Fitting.ViewDelegate import PolyViewDelegate
from sas.qtgui.Perspectives.Fitting.ViewDelegate import MagnetismViewDelegate
from sas.qtgui.Perspectives.Fitting.Constraint import Constraint
from sas.qtgui.Perspectives.Fitting.MultiConstraint import MultiConstraint
from sas.qtgui.Perspectives.Fitting.ReportPageLogic import ReportPageLogic
from sas.qtgui.Perspectives.Fitting.OrderWidget import OrderWidget
TAB_MAGNETISM = 4
TAB_POLY = 3
TAB_ORDERING = 5
CATEGORY_DEFAULT = "Choose category..."
MODEL_DEFAULT = "Choose model..."
CATEGORY_STRUCTURE = "Structure Factor"
CATEGORY_CUSTOM = "Plugin Models"
STRUCTURE_DEFAULT = "None"
DEFAULT_POLYDISP_FUNCTION = 'gaussian'
# CRUFT: remove when new release of sasmodels is available
# https://github.com/SasView/sasview/pull/181#discussion_r218135162
from sasmodels.sasview_model import SasviewModel
if not hasattr(SasviewModel, 'get_weights'):
[docs] def get_weights(self, name):
"""
Returns the polydispersity distribution for parameter *name* as *value* and *weight* arrays.
"""
# type: (str) -> Tuple(np.ndarray, np.ndarray)
_, x, w = self._get_weights(self._model_info.parameters[name])
return x, w
SasviewModel.get_weights = get_weights
logger = logging.getLogger(__name__)
[docs]class ToolTippedItemModel(QtGui.QStandardItemModel):
"""
Subclass from QStandardItemModel to allow displaying tooltips in
QTableView model.
"""
def __init__(self, parent=None):
QtGui.QStandardItemModel.__init__(self, parent)
[docs] def headerData(self, section, orientation, role=QtCore.Qt.DisplayRole):
"""
Displays tooltip for each column's header
:param section:
:param orientation:
:param role:
:return:
"""
if role == QtCore.Qt.ToolTipRole:
if orientation == QtCore.Qt.Horizontal:
return str(self.header_tooltips[section])
return QtGui.QStandardItemModel.headerData(self, section, orientation, role)
[docs]class FittingWidget(QtWidgets.QWidget, Ui_FittingWidgetUI):
"""
Main widget for selecting form and structure factor models
"""
constraintAddedSignal = QtCore.pyqtSignal(list)
newModelSignal = QtCore.pyqtSignal()
fittingFinishedSignal = QtCore.pyqtSignal(tuple)
batchFittingFinishedSignal = QtCore.pyqtSignal(tuple)
Calc1DFinishedSignal = QtCore.pyqtSignal(dict)
Calc2DFinishedSignal = QtCore.pyqtSignal(dict)
MAGNETIC_MODELS = ['sphere', 'core_shell_sphere', 'core_multi_shell', 'cylinder', 'parallelepiped']
def __init__(self, parent=None, data=None, tab_id=1):
super(FittingWidget, self).__init__()
# Necessary globals
self.parent = parent
# Which tab is this widget displayed in?
self.tab_id = tab_id
import sys
sys.excepthook = self.info
# Globals
self.initializeGlobals()
# data index for the batch set
self.data_index = 0
# Main Data[12]D holders
# Logics.data contains a single Data1D/Data2D object
self._logic = [FittingLogic()]
# Main GUI setup up
self.setupUi(self)
self.setWindowTitle("Fitting")
# Set up tabs widgets
self.initializeWidgets()
# Set up models and views
self.initializeModels()
# Defaults for the structure factors
self.setDefaultStructureCombo()
# Make structure factor and model CBs disabled
self.disableModelCombo()
self.disableStructureCombo()
# Generate the category list for display
self.initializeCategoryCombo()
# Initial control state
self.initializeControls()
QtWidgets.QApplication.processEvents()
# Connect signals to controls
self.initializeSignals()
if data is not None:
self.data = data
# New font to display angstrom symbol
new_font = 'font-family: -apple-system, "Helvetica Neue", "Ubuntu";'
self.label_17.setStyleSheet(new_font)
self.label_19.setStyleSheet(new_font)
[docs] def info(self, type, value, tb):
logger.error("".join(traceback.format_exception(type, value, tb)))
@property
def logic(self):
# make sure the logic contains at least one element
assert self._logic
# logic connected to the currently shown data
return self._logic[self.data_index]
@property
def data(self):
return self.logic.data
@data.setter
def data(self, value):
""" data setter """
# Value is either a list of indices for batch fitting or a simple index
# for standard fitting. Assure we have a list, regardless.
if isinstance(value, list):
self.is_batch_fitting = True
else:
value = [value]
assert isinstance(value[0], QtGui.QStandardItem)
# Keep reference to all datasets for batch
self.all_data = value
# Create logics with data items
# Logics.data contains only a single Data1D/Data2D object
if len(value) == 1:
# single data logic is already defined, update data on it
self._logic[0].data = GuiUtils.dataFromItem(value[0])
else:
# batch datasets
self._logic = []
for data_item in value:
logic = FittingLogic(data=GuiUtils.dataFromItem(data_item))
self._logic.append(logic)
# update the ordering tab
self.order_widget.updateData(self.all_data)
# Overwrite data type descriptor
self.is2D = True if isinstance(self.logic.data, Data2D) else False
# Let others know we're full of data now
self.data_is_loaded = True
# Enable/disable UI components
self.setEnablementOnDataLoad()
[docs] def initializeGlobals(self):
"""
Initialize global variables used in this class
"""
# SasModel is loaded
self.model_is_loaded = False
# Data[12]D passed and set
self.data_is_loaded = False
# Batch/single fitting
self.is_batch_fitting = False
self.is_chain_fitting = False
# Is the fit job running?
self.fit_started = False
# The current fit thread
self.calc_fit = None
# Current SasModel in view
self.kernel_module = None
# Current SasModel view dimension
self.is2D = False
# Current SasModel is multishell
self.model_has_shells = False
# Utility variable to enable unselectable option in category combobox
self._previous_category_index = 0
# Utility variables for multishell display
self._n_shells_row = 0
self._num_shell_params = 0
# Dictionary of {model name: model class} for the current category
self.models = {}
# Parameters to fit
self.main_params_to_fit = []
self.poly_params_to_fit = []
self.magnet_params_to_fit = []
# Fit options
self.q_range_min = OptionsWidget.QMIN_DEFAULT
self.q_range_max = OptionsWidget.QMAX_DEFAULT
self.npts = OptionsWidget.NPTS_DEFAULT
self.log_points = False
self.weighting = 0
self.chi2 = None
# Does the control support UNDO/REDO
# temporarily off
self.undo_supported = False
self.page_stack = []
self.all_data = []
# custom plugin models
# {model.name:model}
self.custom_models = self.customModels()
# Polydisp widget table default index for function combobox
self.orig_poly_index = 4
# copy of current kernel model
self.kernel_module_copy = None
# dictionaries of current params
self.poly_params = {}
self.magnet_params = {}
# Page id for fitting
# To keep with previous SasView values, use 200 as the start offset
self.page_id = 200 + self.tab_id
# Data for chosen model
self.model_data = None
self._previous_model_index = 0
# Which shell is being currently displayed?
self.current_shell_displayed = 0
# List of all shell-unique parameters
self.shell_names = []
# Error column presence in parameter display
self.has_error_column = False
self.has_poly_error_column = False
self.has_magnet_error_column = False
# Enablement of comboboxes
self.enabled_cbmodel = False
self.enabled_sfmodel = False
# If the widget generated theory item, save it
self.theory_item = None
# list column widths
self.lstParamHeaderSizes = {}
# Fitting just ran - don't recalculate chi2
self.fitResults = False
# signal communicator
self.communicate = self.parent.communicate
[docs] def initializeWidgets(self):
"""
Initialize widgets for tabs
"""
# Options widget
layout = QtWidgets.QGridLayout()
self.options_widget = OptionsWidget(self, self.logic)
layout.addWidget(self.options_widget)
self.tabOptions.setLayout(layout)
# Smearing widget
layout = QtWidgets.QGridLayout()
self.smearing_widget = SmearingWidget(self)
layout.addWidget(self.smearing_widget)
self.tabResolution.setLayout(layout)
# Order widget
layout = QtWidgets.QGridLayout()
# pass all data items to access multiple datasets
self.order_widget = OrderWidget(self, self.all_data)
layout.addWidget(self.order_widget)
self.tabOrder.setLayout(layout)
# Define bold font for use in various controls
self.boldFont = QtGui.QFont()
self.boldFont.setBold(True)
# Set data label
self.label.setFont(self.boldFont)
self.label.setText("No data loaded")
self.lblFilename.setText("")
# Magnetic angles explained in one picture
self.magneticAnglesWidget = QtWidgets.QWidget()
labl = QtWidgets.QLabel(self.magneticAnglesWidget)
pixmap = QtGui.QPixmap(GuiUtils.IMAGES_DIRECTORY_LOCATION + '/M_angles_pic.png')
labl.setPixmap(pixmap)
self.magneticAnglesWidget.setFixedSize(pixmap.width(), pixmap.height())
[docs] def initializeModels(self):
"""
Set up models and views
"""
# Set the main models
# We can't use a single model here, due to restrictions on flattening
# the model tree with subclassed QAbstractProxyModel...
self._model_model = ToolTippedItemModel()
self._poly_model = ToolTippedItemModel()
self._magnet_model = ToolTippedItemModel()
# Param model displayed in param list
self.lstParams.setModel(self._model_model)
self.readCategoryInfo()
self.model_parameters = None
# Delegates for custom editing and display
self.lstParams.setItemDelegate(ModelViewDelegate(self))
self.lstParams.setAlternatingRowColors(True)
stylesheet = """
QTreeView {
paint-alternating-row-colors-for-empty-area:0;
}
QTreeView::item {
border: 1px;
padding: 2px 1px;
}
QTreeView::item:hover {
background: qlineargradient(x1: 0, y1: 0, x2: 0, y2: 1, stop: 0 #e7effd, stop: 1 #cbdaf1);
border: 1px solid #bfcde4;
}
QTreeView::item:selected {
border: 1px solid #567dbc;
}
QTreeView::item:selected:active{
background: qlineargradient(x1: 0, y1: 0, x2: 0, y2: 1, stop: 0 #6ea1f1, stop: 1 #567dbc);
}
QTreeView::item:selected:!active {
background: qlineargradient(x1: 0, y1: 0, x2: 0, y2: 1, stop: 0 #6b9be8, stop: 1 #577fbf);
}
"""
self.lstParams.setStyleSheet(stylesheet)
self.lstParams.setContextMenuPolicy(QtCore.Qt.CustomContextMenu)
self.lstParams.customContextMenuRequested.connect(self.showModelContextMenu)
self.lstParams.setAttribute(QtCore.Qt.WA_MacShowFocusRect, False)
# Column resize signals
self.lstParams.header().sectionResized.connect(self.onColumnWidthUpdate)
# Poly model displayed in poly list
self.lstPoly.setModel(self._poly_model)
self.setPolyModel()
self.setTableProperties(self.lstPoly)
# Delegates for custom editing and display
self.lstPoly.setItemDelegate(PolyViewDelegate(self))
# Polydispersity function combo response
self.lstPoly.itemDelegate().combo_updated.connect(self.onPolyComboIndexChange)
self.lstPoly.itemDelegate().filename_updated.connect(self.onPolyFilenameChange)
# Magnetism model displayed in magnetism list
self.lstMagnetic.setModel(self._magnet_model)
self.setMagneticModel()
self.setTableProperties(self.lstMagnetic)
# Delegates for custom editing and display
self.lstMagnetic.setItemDelegate(MagnetismViewDelegate(self))
# Initial status of the ordering tab - invisible
self.tabFitting.removeTab(TAB_ORDERING)
[docs] def initializeCategoryCombo(self):
"""
Model category combo setup
"""
category_list = sorted(self.master_category_dict.keys())
self.cbCategory.addItem(CATEGORY_DEFAULT)
self.cbCategory.addItems(category_list)
if CATEGORY_STRUCTURE not in category_list:
self.cbCategory.addItem(CATEGORY_STRUCTURE)
self.cbCategory.setCurrentIndex(0)
[docs] def setEnablementOnDataLoad(self):
"""
Enable/disable various UI elements based on data loaded
"""
# Tag along functionality
self.label.setText("Data loaded from: ")
if self.logic.data.filename:
self.lblFilename.setText(self.logic.data.filename)
else:
self.lblFilename.setText(self.logic.data.name)
self.updateQRange()
# Switch off Data2D control
self.chk2DView.setEnabled(False)
self.chk2DView.setVisible(False)
self.chkMagnetism.setEnabled(False)
self.tabFitting.setTabEnabled(TAB_MAGNETISM, self.chkMagnetism.isChecked())
# Combo box or label for file name"
if self.is_batch_fitting:
self.lblFilename.setVisible(False)
for dataitem in self.all_data:
filename = GuiUtils.dataFromItem(dataitem).filename
self.cbFileNames.addItem(filename)
self.cbFileNames.setVisible(True)
self.chkChainFit.setEnabled(True)
self.chkChainFit.setVisible(True)
# This panel is not designed to view individual fits, so disable plotting
self.cmdPlot.setVisible(False)
# Similarly on other tabs
self.options_widget.setEnablementOnDataLoad()
self.onSelectModel()
# Smearing tab
self.smearing_widget.updateData(self.data)
[docs] def acceptsData(self):
""" Tells the caller this widget can accept new dataset """
return not self.data_is_loaded
[docs] def disableModelCombo(self):
""" Disable the combobox """
self.cbModel.setEnabled(False)
self.lblModel.setEnabled(False)
self.enabled_cbmodel = False
[docs] def enableModelCombo(self):
""" Enable the combobox """
self.cbModel.setEnabled(True)
self.lblModel.setEnabled(True)
self.enabled_cbmodel = True
[docs] def disableStructureCombo(self):
""" Disable the combobox """
self.cbStructureFactor.setEnabled(False)
self.lblStructure.setEnabled(False)
self.enabled_sfmodel = False
[docs] def enableStructureCombo(self):
""" Enable the combobox """
self.cbStructureFactor.setEnabled(True)
self.lblStructure.setEnabled(True)
self.enabled_sfmodel = True
[docs] def togglePoly(self, isChecked):
""" Enable/disable the polydispersity tab """
self.tabFitting.setTabEnabled(TAB_POLY, isChecked)
# Check if any parameters are ready for fitting
self.cmdFit.setEnabled(self.haveParamsToFit())
[docs] def toggleMagnetism(self, isChecked):
""" Enable/disable the magnetism tab """
self.tabFitting.setTabEnabled(TAB_MAGNETISM, isChecked)
# Check if any parameters are ready for fitting
self.cmdFit.setEnabled(self.haveParamsToFit())
[docs] def toggleChainFit(self, isChecked):
""" Enable/disable chain fitting """
self.is_chain_fitting = isChecked
# show/hide the ordering tab
if isChecked:
self.tabFitting.insertTab(TAB_ORDERING, self.tabOrder, "Order")
else:
self.tabFitting.removeTab(TAB_ORDERING)
[docs] def toggle2D(self, isChecked):
""" Enable/disable the controls dependent on 1D/2D data instance """
self.chkMagnetism.setEnabled(isChecked)
self.is2D = isChecked
# Reload the current model
if self.kernel_module:
self.onSelectModel()
[docs] @classmethod
def customModels(cls):
""" Reads in file names in the custom plugin directory """
manager = models.ModelManager()
# TODO: Cache plugin models instead of scanning the directory each time.
manager.update()
# TODO: Define plugin_models property in ModelManager.
return manager.base.plugin_models
[docs] def initializeControls(self):
"""
Set initial control enablement
"""
self.cbFileNames.setVisible(False)
self.cmdFit.setEnabled(False)
self.cmdPlot.setEnabled(False)
self.chkPolydispersity.setEnabled(True)
self.chkPolydispersity.setCheckState(False)
self.chk2DView.setEnabled(True)
self.chk2DView.setCheckState(False)
self.chkMagnetism.setEnabled(False)
self.chkMagnetism.setCheckState(False)
self.chkChainFit.setEnabled(False)
self.chkChainFit.setVisible(False)
# Tabs
self.tabFitting.setTabEnabled(TAB_POLY, False)
self.tabFitting.setTabEnabled(TAB_MAGNETISM, False)
self.lblChi2Value.setText("---")
# Smearing tab
self.smearing_widget.updateData(self.data)
# Line edits in the option tab
self.updateQRange()
[docs] def initializeSignals(self):
"""
Connect GUI element signals
"""
# Comboboxes
self.cbStructureFactor.currentIndexChanged.connect(self.onSelectStructureFactor)
self.cbCategory.currentIndexChanged.connect(self.onSelectCategory)
self.cbModel.currentIndexChanged.connect(self.onSelectModel)
self.cbFileNames.currentIndexChanged.connect(self.onSelectBatchFilename)
# Checkboxes
self.chk2DView.toggled.connect(self.toggle2D)
self.chkPolydispersity.toggled.connect(self.togglePoly)
self.chkMagnetism.toggled.connect(self.toggleMagnetism)
self.chkChainFit.toggled.connect(self.toggleChainFit)
# Buttons
self.cmdFit.clicked.connect(self.onFit)
self.cmdPlot.clicked.connect(self.onPlot)
self.cmdHelp.clicked.connect(self.onHelp)
self.cmdMagneticDisplay.clicked.connect(self.onDisplayMagneticAngles)
# Respond to change in parameters from the UI
self._model_model.dataChanged.connect(self.onMainParamsChange)
self._poly_model.dataChanged.connect(self.onPolyModelChange)
self._magnet_model.dataChanged.connect(self.onMagnetModelChange)
self.lstParams.selectionModel().selectionChanged.connect(self.onSelectionChanged)
# Local signals
self.batchFittingFinishedSignal.connect(self.batchFitComplete)
self.fittingFinishedSignal.connect(self.fitComplete)
self.Calc1DFinishedSignal.connect(self.complete1D)
self.Calc2DFinishedSignal.connect(self.complete2D)
# Signals from separate tabs asking for replot
self.options_widget.plot_signal.connect(self.onOptionsUpdate)
# Signals from other widgets
self.communicate.customModelDirectoryChanged.connect(self.onCustomModelChange)
self.smearing_widget.smearingChangedSignal.connect(self.onSmearingOptionsUpdate)
# Communicator signal
self.communicate.updateModelCategoriesSignal.connect(self.onCategoriesChanged)
self.communicate.updateMaskedDataSignal.connect(self.onMaskedData)
[docs] def modelName(self):
"""
Returns model name, by default M<tab#>, e.g. M1, M2
"""
return "M%i" % self.tab_id
[docs] def nameForFittedData(self, name):
"""
Generate name for the current fit
"""
if self.is2D:
name += "2d"
name = "%s [%s]" % (self.modelName(), name)
return name
[docs] def showModelContextMenu(self, position):
"""
Show context specific menu in the parameter table.
When clicked on parameter(s): fitting/constraints options
When clicked on white space: model description
"""
rows = [s.row() for s in self.lstParams.selectionModel().selectedRows()
if self.isCheckable(s.row())]
menu = self.showModelDescription() if not rows else self.modelContextMenu(rows)
try:
menu.exec_(self.lstParams.viewport().mapToGlobal(position))
except AttributeError as ex:
logger.error("Error generating context menu: %s" % ex)
return
[docs] def modelContextMenu(self, rows):
"""
Create context menu for the parameter selection
"""
menu = QtWidgets.QMenu()
num_rows = len(rows)
if num_rows < 1:
return menu
# Select for fitting
param_string = "parameter " if num_rows == 1 else "parameters "
to_string = "to its current value" if num_rows == 1 else "to their current values"
has_constraints = any([self.rowHasConstraint(i) for i in rows])
has_real_constraints = any([self.rowHasActiveConstraint(i) for i in rows])
self.actionSelect = QtWidgets.QAction(self)
self.actionSelect.setObjectName("actionSelect")
self.actionSelect.setText(QtCore.QCoreApplication.translate("self", "Select "+param_string+" for fitting"))
# Unselect from fitting
self.actionDeselect = QtWidgets.QAction(self)
self.actionDeselect.setObjectName("actionDeselect")
self.actionDeselect.setText(QtCore.QCoreApplication.translate("self", "De-select "+param_string+" from fitting"))
self.actionConstrain = QtWidgets.QAction(self)
self.actionConstrain.setObjectName("actionConstrain")
self.actionConstrain.setText(QtCore.QCoreApplication.translate("self", "Constrain "+param_string + to_string))
self.actionRemoveConstraint = QtWidgets.QAction(self)
self.actionRemoveConstraint.setObjectName("actionRemoveConstrain")
self.actionRemoveConstraint.setText(QtCore.QCoreApplication.translate("self", "Remove constraint"))
self.actionEditConstraint = QtWidgets.QAction(self)
self.actionEditConstraint.setObjectName("actionEditConstrain")
self.actionEditConstraint.setText(QtCore.QCoreApplication.translate("self", "Edit constraint"))
self.actionMultiConstrain = QtWidgets.QAction(self)
self.actionMultiConstrain.setObjectName("actionMultiConstrain")
self.actionMultiConstrain.setText(QtCore.QCoreApplication.translate("self", "Constrain selected parameters to their current values"))
self.actionMutualMultiConstrain = QtWidgets.QAction(self)
self.actionMutualMultiConstrain.setObjectName("actionMutualMultiConstrain")
self.actionMutualMultiConstrain.setText(QtCore.QCoreApplication.translate("self", "Mutual constrain of selected parameters..."))
menu.addAction(self.actionSelect)
menu.addAction(self.actionDeselect)
menu.addSeparator()
if has_constraints:
menu.addAction(self.actionRemoveConstraint)
if num_rows == 1 and has_real_constraints:
menu.addAction(self.actionEditConstraint)
#if num_rows == 1:
# menu.addAction(self.actionEditConstraint)
else:
menu.addAction(self.actionConstrain)
if num_rows == 2:
menu.addAction(self.actionMutualMultiConstrain)
# Define the callbacks
self.actionConstrain.triggered.connect(self.addSimpleConstraint)
self.actionRemoveConstraint.triggered.connect(self.deleteConstraint)
self.actionEditConstraint.triggered.connect(self.editConstraint)
self.actionMutualMultiConstrain.triggered.connect(self.showMultiConstraint)
self.actionSelect.triggered.connect(self.selectParameters)
self.actionDeselect.triggered.connect(self.deselectParameters)
return menu
[docs] def showMultiConstraint(self):
"""
Show the constraint widget and receive the expression
"""
selected_rows = self.lstParams.selectionModel().selectedRows()
# There have to be only two rows selected. The caller takes care of that
# but let's check the correctness.
assert len(selected_rows) == 2
params_list = [s.data() for s in selected_rows]
# Create and display the widget for param1 and param2
mc_widget = MultiConstraint(self, params=params_list)
# Check if any of the parameters are polydisperse
if not np.any([FittingUtilities.isParamPolydisperse(p, self.model_parameters, is2D=self.is2D) for p in params_list]):
# no parameters are pd - reset the text to not show the warning
mc_widget.lblWarning.setText("")
if mc_widget.exec_() != QtWidgets.QDialog.Accepted:
return
constraint = Constraint()
c_text = mc_widget.txtConstraint.text()
# widget.params[0] is the parameter we're constraining
constraint.param = mc_widget.params[0]
# parameter should have the model name preamble
model_name = self.kernel_module.name
# param_used is the parameter we're using in constraining function
param_used = mc_widget.params[1]
# Replace param_used with model_name.param_used
updated_param_used = model_name + "." + param_used
new_func = c_text.replace(param_used, updated_param_used)
constraint.func = new_func
constraint.value_ex = updated_param_used
# Which row is the constrained parameter in?
row = self.getRowFromName(constraint.param)
# what is the parameter to constraint to?
constraint.value = param_used
# Should the new constraint be validated?
constraint.validate = mc_widget.validate
# Create a new item and add the Constraint object as a child
self.addConstraintToRow(constraint=constraint, row=row)
[docs] def getRowFromName(self, name):
"""
Given parameter name get the row number in self._model_model
"""
for row in range(self._model_model.rowCount()):
row_name = self._model_model.item(row).text()
if row_name == name:
return row
return None
[docs] def getParamNames(self):
"""
Return list of all parameters for the current model
"""
return [self._model_model.item(row).text()
for row in range(self._model_model.rowCount())
if self.isCheckable(row)]
[docs] def modifyViewOnRow(self, row, font=None, brush=None):
"""
Change how the given row of the main model is shown
"""
fields_enabled = False
if font is None:
font = QtGui.QFont()
fields_enabled = True
if brush is None:
brush = QtGui.QBrush()
fields_enabled = True
self._model_model.blockSignals(True)
# Modify font and foreground of affected rows
for column in range(0, self._model_model.columnCount()):
self._model_model.item(row, column).setForeground(brush)
self._model_model.item(row, column).setFont(font)
self._model_model.item(row, column).setEditable(fields_enabled)
self._model_model.blockSignals(False)
[docs] def addConstraintToRow(self, constraint=None, row=0):
"""
Adds the constraint object to requested row
"""
# Create a new item and add the Constraint object as a child
assert isinstance(constraint, Constraint)
assert 0 <= row <= self._model_model.rowCount()
assert self.isCheckable(row)
item = QtGui.QStandardItem()
item.setData(constraint)
self._model_model.item(row, 1).setChild(0, item)
# Set min/max to the value constrained
self.constraintAddedSignal.emit([row])
# Show visual hints for the constraint
font = QtGui.QFont()
font.setItalic(True)
brush = QtGui.QBrush(QtGui.QColor('blue'))
self.modifyViewOnRow(row, font=font, brush=brush)
self.communicate.statusBarUpdateSignal.emit('Constraint added')
[docs] def addSimpleConstraint(self):
"""
Adds a constraint on a single parameter.
"""
min_col = self.lstParams.itemDelegate().param_min
max_col = self.lstParams.itemDelegate().param_max
for row in self.selectedParameters():
assert(self.isCheckable(row))
param = self._model_model.item(row, 0).text()
value = self._model_model.item(row, 1).text()
min_t = self._model_model.item(row, min_col).text()
max_t = self._model_model.item(row, max_col).text()
# Create a Constraint object
constraint = Constraint(param=param, value=value, min=min_t, max=max_t)
# Create a new item and add the Constraint object as a child
item = QtGui.QStandardItem()
item.setData(constraint)
self._model_model.item(row, 1).setChild(0, item)
# Assumed correctness from the validator
value = float(value)
# BUMPS calculates log(max-min) without any checks, so let's assign minor range
min_v = value - (value/10000.0)
max_v = value + (value/10000.0)
# Set min/max to the value constrained
self._model_model.item(row, min_col).setText(str(min_v))
self._model_model.item(row, max_col).setText(str(max_v))
self.constraintAddedSignal.emit([row])
# Show visual hints for the constraint
font = QtGui.QFont()
font.setItalic(True)
brush = QtGui.QBrush(QtGui.QColor('blue'))
self.modifyViewOnRow(row, font=font, brush=brush)
self.communicate.statusBarUpdateSignal.emit('Constraint added')
[docs] def editConstraint(self):
"""
Delete constraints from selected parameters.
"""
params_list = [s.data() for s in self.lstParams.selectionModel().selectedRows()
if self.isCheckable(s.row())]
assert len(params_list) == 1
row = self.lstParams.selectionModel().selectedRows()[0].row()
constraint = self.getConstraintForRow(row)
# Create and display the widget for param1 and param2
mc_widget = MultiConstraint(self, params=params_list, constraint=constraint)
# Check if any of the parameters are polydisperse
if not np.any([FittingUtilities.isParamPolydisperse(p, self.model_parameters, is2D=self.is2D) for p in params_list]):
# no parameters are pd - reset the text to not show the warning
mc_widget.lblWarning.setText("")
if mc_widget.exec_() != QtWidgets.QDialog.Accepted:
return
constraint = Constraint()
c_text = mc_widget.txtConstraint.text()
# widget.params[0] is the parameter we're constraining
constraint.param = mc_widget.params[0]
# parameter should have the model name preamble
model_name = self.kernel_module.name
# param_used is the parameter we're using in constraining function
param_used = mc_widget.params[1]
# Replace param_used with model_name.param_used
updated_param_used = model_name + "." + param_used
# Update constraint with new values
constraint.func = c_text
constraint.value_ex = updated_param_used
constraint.value = param_used
# Should the new constraint be validated?
constraint.validate = mc_widget.validate
# Which row is the constrained parameter in?
row = self.getRowFromName(constraint.param)
# Create a new item and add the Constraint object as a child
self.addConstraintToRow(constraint=constraint, row=row)
[docs] def deleteConstraint(self):
"""
Delete constraints from selected parameters.
"""
params = [s.data() for s in self.lstParams.selectionModel().selectedRows()
if self.isCheckable(s.row())]
for param in params:
self.deleteConstraintOnParameter(param=param)
[docs] def deleteConstraintOnParameter(self, param=None):
"""
Delete the constraint on model parameter 'param'
"""
min_col = self.lstParams.itemDelegate().param_min
max_col = self.lstParams.itemDelegate().param_max
for row in range(self._model_model.rowCount()):
if not self.isCheckable(row):
continue
if not self.rowHasConstraint(row):
continue
# Get the Constraint object from of the model item
item = self._model_model.item(row, 1)
constraint = self.getConstraintForRow(row)
if constraint is None:
continue
if not isinstance(constraint, Constraint):
continue
if param and constraint.param != param:
continue
# Now we got the right row. Delete the constraint and clean up
# Retrieve old values and put them on the model
if constraint.min is not None:
self._model_model.item(row, min_col).setText(constraint.min)
if constraint.max is not None:
self._model_model.item(row, max_col).setText(constraint.max)
# Remove constraint item
item.removeRow(0)
self.constraintAddedSignal.emit([row])
self.modifyViewOnRow(row)
self.communicate.statusBarUpdateSignal.emit('Constraint removed')
[docs] def getConstraintForRow(self, row):
"""
For the given row, return its constraint, if any (otherwise None)
"""
if not self.isCheckable(row):
return None
item = self._model_model.item(row, 1)
try:
return item.child(0).data()
except AttributeError:
return None
[docs] def allParamNames(self):
"""
Returns a list of all parameter names defined on the current model
"""
all_params = self.kernel_module._model_info.parameters.kernel_parameters
all_param_names = [param.name for param in all_params]
# Assure scale and background are always included
if 'scale' not in all_param_names:
all_param_names.append('scale')
if 'background' not in all_param_names:
all_param_names.append('background')
return all_param_names
[docs] def paramHasConstraint(self, param=None):
"""
Finds out if the given parameter in the main model has a constraint child
"""
if param is None: return False
if param not in self.allParamNames(): return False
for row in range(self._model_model.rowCount()):
if self._model_model.item(row,0).text() != param: continue
return self.rowHasConstraint(row)
# nothing found
return False
[docs] def rowHasConstraint(self, row):
"""
Finds out if row of the main model has a constraint child
"""
if not self.isCheckable(row):
return False
item = self._model_model.item(row, 1)
if not item.hasChildren():
return False
c = item.child(0).data()
if isinstance(c, Constraint):
return True
return False
[docs] def rowHasActiveConstraint(self, row):
"""
Finds out if row of the main model has an active constraint child
"""
if not self.isCheckable(row):
return False
item = self._model_model.item(row, 1)
if not item.hasChildren():
return False
c = item.child(0).data()
if isinstance(c, Constraint) and c.active:
return True
return False
[docs] def rowHasActiveComplexConstraint(self, row):
"""
Finds out if row of the main model has an active, nontrivial constraint child
"""
if not self.isCheckable(row):
return False
item = self._model_model.item(row, 1)
if not item.hasChildren():
return False
c = item.child(0).data()
if isinstance(c, Constraint) and c.func and c.active:
return True
return False
[docs] def selectParameters(self):
"""
Selected parameter is chosen for fitting
"""
status = QtCore.Qt.Checked
self.setParameterSelection(status)
[docs] def deselectParameters(self):
"""
Selected parameters are removed for fitting
"""
status = QtCore.Qt.Unchecked
self.setParameterSelection(status)
[docs] def selectedParameters(self):
""" Returns list of selected (highlighted) parameters """
return [s.row() for s in self.lstParams.selectionModel().selectedRows()
if self.isCheckable(s.row())]
[docs] def setParameterSelection(self, status=QtCore.Qt.Unchecked):
"""
Selected parameters are chosen for fitting
"""
# Convert to proper indices and set requested enablement
for row in self.selectedParameters():
self._model_model.item(row, 0).setCheckState(status)
[docs] def getConstraintsForModel(self):
"""
Return a list of tuples. Each tuple contains constraints mapped as
('constrained parameter', 'function to constrain')
e.g. [('sld','5*sld_solvent')]
"""
param_number = self._model_model.rowCount()
params = [(self._model_model.item(s, 0).text(),
self._model_model.item(s, 1).child(0).data().func)
for s in range(param_number) if self.rowHasActiveConstraint(s)]
return params
[docs] def getComplexConstraintsForModel(self):
"""
Return a list of tuples. Each tuple contains constraints mapped as
('constrained parameter', 'function to constrain')
e.g. [('sld','5*M2.sld_solvent')].
Only for constraints with defined VALUE
"""
param_number = self._model_model.rowCount()
params = [(self._model_model.item(s, 0).text(),
self._model_model.item(s, 1).child(0).data().func)
for s in range(param_number) if self.rowHasActiveComplexConstraint(s)]
return params
[docs] def getConstraintObjectsForModel(self):
"""
Returns Constraint objects present on the whole model
"""
param_number = self._model_model.rowCount()
constraints = [self._model_model.item(s, 1).child(0).data()
for s in range(param_number) if self.rowHasConstraint(s)]
return constraints
[docs] def getConstraintsForFitting(self):
"""
Return a list of constraints in format ready for use in fiting
"""
# Get constraints
constraints = self.getComplexConstraintsForModel()
# See if there are any constraints across models
multi_constraints = [cons for cons in constraints if self.isConstraintMultimodel(cons[1])]
if multi_constraints:
# Let users choose what to do
msg = "The current fit contains constraints relying on other fit pages.\n"
msg += "Parameters with those constraints are:\n" +\
'\n'.join([cons[0] for cons in multi_constraints])
msg += "\n\nWould you like to remove these constraints or cancel fitting?"
msgbox = QtWidgets.QMessageBox(self)
msgbox.setIcon(QtWidgets.QMessageBox.Warning)
msgbox.setText(msg)
msgbox.setWindowTitle("Existing Constraints")
# custom buttons
button_remove = QtWidgets.QPushButton("Remove")
msgbox.addButton(button_remove, QtWidgets.QMessageBox.YesRole)
button_cancel = QtWidgets.QPushButton("Cancel")
msgbox.addButton(button_cancel, QtWidgets.QMessageBox.RejectRole)
retval = msgbox.exec_()
if retval == QtWidgets.QMessageBox.RejectRole:
# cancel fit
raise ValueError("Fitting cancelled")
else:
# remove constraint
for cons in multi_constraints:
self.deleteConstraintOnParameter(param=cons[0])
# re-read the constraints
constraints = self.getComplexConstraintsForModel()
return constraints
[docs] def showModelDescription(self):
"""
Creates a window with model description, when right clicked in the treeview
"""
msg = 'Model description:\n'
if self.kernel_module is not None:
if str(self.kernel_module.description).rstrip().lstrip() == '':
msg += "Sorry, no information is available for this model."
else:
msg += self.kernel_module.description + '\n'
else:
msg += "You must select a model to get information on this"
menu = QtWidgets.QMenu()
label = QtWidgets.QLabel(msg)
action = QtWidgets.QWidgetAction(self)
action.setDefaultWidget(label)
menu.addAction(action)
return menu
[docs] def canHaveMagnetism(self):
"""
Checks if the current model has magnetic scattering implemented
"""
has_mag_params = False
if self.kernel_module:
has_mag_params = len(self.kernel_module.magnetic_params) > 0
return self.is2D and has_mag_params
[docs] def onSelectModel(self):
"""
Respond to select Model from list event
"""
model = self.cbModel.currentText()
if model == MODEL_DEFAULT:
# if the previous category was not the default, keep it.
# Otherwise, just return
if self._previous_model_index != 0:
# We need to block signals, or else state changes on perceived unchanged conditions
self.cbModel.blockSignals(True)
self.cbModel.setCurrentIndex(self._previous_model_index)
self.cbModel.blockSignals(False)
return
# Assure the control is active
if not self.cbModel.isEnabled():
return
# Empty combobox forced to be read
if not model:
return
self.chkMagnetism.setEnabled(self.canHaveMagnetism())
self.chkMagnetism.setEnabled(self.canHaveMagnetism())
self.tabFitting.setTabEnabled(TAB_MAGNETISM, self.chkMagnetism.isChecked() and self.canHaveMagnetism())
self._previous_model_index = self.cbModel.currentIndex()
# Reset parameters to fit
self.resetParametersToFit()
self.has_error_column = False
self.has_poly_error_column = False
structure = None
if self.cbStructureFactor.isEnabled():
structure = str(self.cbStructureFactor.currentText())
self.respondToModelStructure(model=model, structure_factor=structure)
[docs] def onSelectBatchFilename(self, data_index):
"""
Update the logic based on the selected file in batch fitting
"""
self.data_index = data_index
self.updateQRange()
[docs] def onSelectStructureFactor(self):
"""
Select Structure Factor from list
"""
model = str(self.cbModel.currentText())
category = str(self.cbCategory.currentText())
structure = str(self.cbStructureFactor.currentText())
if category == CATEGORY_STRUCTURE:
model = None
# copy original clipboard
cb = QtWidgets.QApplication.clipboard()
cb_text = cb.text()
# get the screenshot of the current param state
self.onCopyToClipboard("")
# Reset parameters to fit
self.resetParametersToFit()
self.has_error_column = False
self.has_poly_error_column = False
self.respondToModelStructure(model=model, structure_factor=structure)
# recast the original parameters into the model
self.onParameterPaste()
# revert to the original clipboard
cb.setText(cb_text)
[docs] def resetParametersToFit(self):
"""
Clears the list of parameters to be fitted
"""
self.main_params_to_fit = []
self.poly_params_to_fit = []
self.magnet_params_to_fit = []
[docs] def onCustomModelChange(self):
"""
Reload the custom model combobox
"""
## If caching plugins, then force cache reset to reload plugins
#ModelManager().plugins_reset()
self.custom_models = self.customModels()
self.readCustomCategoryInfo()
self.onCategoriesChanged()
# See if we need to update the combo in-place
if self.cbCategory.currentText() != CATEGORY_CUSTOM: return
current_text = self.cbModel.currentText()
self.cbModel.blockSignals(True)
self.cbModel.clear()
self.cbModel.blockSignals(False)
self.enableModelCombo()
self.disableStructureCombo()
# Retrieve the list of models
model_list = self.master_category_dict[CATEGORY_CUSTOM]
# Populate the models combobox
self.cbModel.addItems(sorted([model for (model, _) in model_list]))
new_index = self.cbModel.findText(current_text)
if new_index != -1:
self.cbModel.setCurrentIndex(self.cbModel.findText(current_text))
[docs] def onSelectionChanged(self):
"""
React to parameter selection
"""
rows = self.lstParams.selectionModel().selectedRows()
# Clean previous messages
self.communicate.statusBarUpdateSignal.emit("")
if len(rows) == 1:
# Show constraint, if present
row = rows[0].row()
if not self.rowHasConstraint(row):
return
constr = self.getConstraintForRow(row)
func = self.getConstraintForRow(row).func
if constr.func is not None:
# inter-parameter constraint
update_text = "Active constraint: "+func
elif constr.param == rows[0].data():
# current value constraint
update_text = "Value constrained to: " + str(constr.value)
else:
# ill defined constraint
return
self.communicate.statusBarUpdateSignal.emit(update_text)
[docs] def replaceConstraintName(self, old_name, new_name=""):
"""
Replace names of models in defined constraints
"""
param_number = self._model_model.rowCount()
# loop over parameters
for row in range(param_number):
if self.rowHasConstraint(row):
func = self._model_model.item(row, 1).child(0).data().func
if old_name in func:
new_func = func.replace(old_name, new_name)
self._model_model.item(row, 1).child(0).data().func = new_func
[docs] def isConstraintMultimodel(self, constraint):
"""
Check if the constraint function text contains current model name
"""
current_model_name = self.kernel_module.name
if current_model_name in constraint:
return False
else:
return True
[docs] def updateData(self):
"""
Helper function for recalculation of data used in plotting
"""
# Update the chart
if self.data_is_loaded:
self.cmdPlot.setText("Show Plot")
self.calculateQGridForModel()
else:
self.cmdPlot.setText("Calculate")
# Create default datasets if no data passed
self.createDefaultDataset()
self.theory_item = None # ensure theory is recalc. before plot, see showTheoryPlot()
[docs] def respondToModelStructure(self, model=None, structure_factor=None):
# Set enablement on calculate/plot
self.cmdPlot.setEnabled(True)
# kernel parameters -> model_model
self.SASModelToQModel(model, structure_factor)
# Enable magnetism checkbox for selected models
self.chkMagnetism.setEnabled(self.canHaveMagnetism())
self.tabFitting.setTabEnabled(TAB_MAGNETISM, self.chkMagnetism.isChecked() and self.canHaveMagnetism())
# Update column widths
for column, width in self.lstParamHeaderSizes.items():
self.lstParams.setColumnWidth(column, width)
# Update plot
self.updateData()
# Update state stack
self.updateUndo()
# Let others know
self.newModelSignal.emit()
[docs] def onSelectCategory(self):
"""
Select Category from list
"""
category = self.cbCategory.currentText()
# Check if the user chose "Choose category entry"
if category == CATEGORY_DEFAULT:
# if the previous category was not the default, keep it.
# Otherwise, just return
if self._previous_category_index != 0:
# We need to block signals, or else state changes on perceived unchanged conditions
self.cbCategory.blockSignals(True)
self.cbCategory.setCurrentIndex(self._previous_category_index)
self.cbCategory.blockSignals(False)
return
if category == CATEGORY_STRUCTURE:
self.disableModelCombo()
self.enableStructureCombo()
# set the index to 0
self.cbStructureFactor.setCurrentIndex(0)
self.model_parameters = None
self._model_model.clear()
return
# Wipe out the parameter model
self._model_model.clear()
# Safely clear and enable the model combo
self.cbModel.blockSignals(True)
self.cbModel.clear()
self.cbModel.blockSignals(False)
self.enableModelCombo()
self.disableStructureCombo()
self._previous_category_index = self.cbCategory.currentIndex()
# Retrieve the list of models
model_list = self.master_category_dict[category]
# Populate the models combobox
self.cbModel.blockSignals(True)
self.cbModel.addItem(MODEL_DEFAULT)
self.cbModel.addItems(sorted([model for (model, _) in model_list]))
self.cbModel.blockSignals(False)
[docs] def onPolyModelChange(self, top, bottom):
"""
Callback method for updating the main model and sasmodel
parameters with the GUI values in the polydispersity view
"""
item = self._poly_model.itemFromIndex(top)
model_column = item.column()
model_row = item.row()
name_index = self._poly_model.index(model_row, 0)
parameter_name = str(name_index.data()) # "distribution of sld" etc.
if "istribution of" in parameter_name:
# just the last word
parameter_name = parameter_name.rsplit()[-1]
delegate = self.lstPoly.itemDelegate()
# Extract changed value.
if model_column == delegate.poly_parameter:
# Is the parameter checked for fitting?
value = item.checkState()
parameter_name_w = parameter_name + '.width'
if value == QtCore.Qt.Checked:
self.poly_params_to_fit.append(parameter_name_w)
else:
if parameter_name_w in self.poly_params_to_fit:
self.poly_params_to_fit.remove(parameter_name_w)
self.cmdFit.setEnabled(self.haveParamsToFit())
# force data update
key = parameter_name + '.' + delegate.columnDict()[delegate.poly_pd]
self.poly_params[key] = value
self.updateData()
elif model_column in [delegate.poly_min, delegate.poly_max]:
try:
value = GuiUtils.toDouble(item.text())
except TypeError:
# Can't be converted properly, bring back the old value and exit
return
current_details = self.kernel_module.details[parameter_name]
if self.has_poly_error_column:
# err column changes the indexing
current_details[model_column-2] = value
else:
current_details[model_column-1] = value
elif model_column == delegate.poly_function:
# name of the function - just pass
pass
else:
try:
value = GuiUtils.toDouble(item.text())
except TypeError:
# Can't be converted properly, bring back the old value and exit
return
# Update the sasmodel
# PD[ratio] -> width, npts -> npts, nsigs -> nsigmas
if model_column not in delegate.columnDict():
return
key = parameter_name + '.' + delegate.columnDict()[model_column]
self.poly_params[key] = value
# Update plot
self.updateData()
# update in param model
if model_column in [delegate.poly_pd, delegate.poly_error, delegate.poly_min, delegate.poly_max]:
row = self.getRowFromName(parameter_name)
param_item = self._model_model.item(row).child(0).child(0, model_column)
if param_item is None:
return
self._model_model.blockSignals(True)
param_item.setText(item.text())
self._model_model.blockSignals(False)
[docs] def onMagnetModelChange(self, top, bottom):
"""
Callback method for updating the sasmodel magnetic parameters with the GUI values
"""
item = self._magnet_model.itemFromIndex(top)
model_column = item.column()
model_row = item.row()
name_index = self._magnet_model.index(model_row, 0)
parameter_name = str(self._magnet_model.data(name_index))
if model_column == 0:
value = item.checkState()
if value == QtCore.Qt.Checked:
self.magnet_params_to_fit.append(parameter_name)
else:
if parameter_name in self.magnet_params_to_fit:
self.magnet_params_to_fit.remove(parameter_name)
self.cmdFit.setEnabled(self.haveParamsToFit())
# Update state stack
self.updateUndo()
return
# Extract changed value.
try:
value = GuiUtils.toDouble(item.text())
except TypeError:
# Unparsable field
return
delegate = self.lstMagnetic.itemDelegate()
if model_column > 1:
if model_column == delegate.mag_min:
pos = 1
elif model_column == delegate.mag_max:
pos = 2
elif model_column == delegate.mag_unit:
pos = 0
else:
raise AttributeError("Wrong column in magnetism table.")
# min/max to be changed in self.kernel_module.details[parameter_name] = ['Ang', 0.0, inf]
self.kernel_module.details[parameter_name][pos] = value
else:
self.magnet_params[parameter_name] = value
#self.kernel_module.setParam(parameter_name) = value
# Force the chart update when actual parameters changed
self.recalculatePlotData()
# Update state stack
self.updateUndo()
[docs] def onHelp(self):
"""
Show the "Fitting" section of help
"""
tree_location = "/user/qtgui/Perspectives/Fitting/"
# Actual file will depend on the current tab
tab_id = self.tabFitting.currentIndex()
helpfile = "fitting.html"
if tab_id == 0:
# Look at the model and if set, pull out its help page
if self.kernel_module is not None and hasattr(self.kernel_module, 'name'):
# See if the help file is there
# This breaks encapsulation a bit, though.
full_path = GuiUtils.HELP_DIRECTORY_LOCATION
sas_path = os.path.abspath(os.path.dirname(sys.argv[0]))
location = sas_path + "/" + full_path
location += "/user/models/" + self.kernel_module.id + ".html"
if os.path.isfile(location):
# We have HTML for this model - show it
tree_location = "/user/models/"
helpfile = self.kernel_module.id + ".html"
else:
helpfile = "fitting_help.html"
elif tab_id == 1:
helpfile = "residuals_help.html"
elif tab_id == 2:
helpfile = "resolution.html"
elif tab_id == 3:
helpfile = "pd/polydispersity.html"
elif tab_id == 4:
helpfile = "magnetism/magnetism.html"
help_location = tree_location + helpfile
self.showHelp(help_location)
[docs] def showHelp(self, url):
"""
Calls parent's method for opening an HTML page
"""
self.parent.showHelp(url)
[docs] def onDisplayMagneticAngles(self):
"""
Display a simple image showing direction of magnetic angles
"""
self.magneticAnglesWidget.show()
[docs] def onFit(self):
"""
Perform fitting on the current data
"""
if self.fit_started:
self.stopFit()
return
# initialize fitter constants
fit_id = 0
handler = None
batch_inputs = {}
batch_outputs = {}
#---------------------------------
if LocalConfig.USING_TWISTED:
handler = None
updater = None
else:
handler = ConsoleUpdate(parent=self.parent,
manager=self,
improvement_delta=0.1)
updater = handler.update_fit
# Prepare the fitter object
try:
fitters, _ = self.prepareFitters()
except ValueError as ex:
# This should not happen! GUI explicitly forbids this situation
self.communicate.statusBarUpdateSignal.emit(str(ex))
return
# keep local copy of kernel parameters, as they will change during the update
self.kernel_module_copy = copy.deepcopy(self.kernel_module)
# Create the fitting thread, based on the fitter
completefn = self.batchFittingCompleted if self.is_batch_fitting else self.fittingCompleted
self.calc_fit = FitThread(handler=handler,
fn=fitters,
batch_inputs=batch_inputs,
batch_outputs=batch_outputs,
page_id=[[self.page_id]],
updatefn=updater,
completefn=completefn,
reset_flag=self.is_chain_fitting)
if LocalConfig.USING_TWISTED:
# start the trhrhread with twisted
calc_thread = threads.deferToThread(self.calc_fit.compute)
calc_thread.addCallback(completefn)
calc_thread.addErrback(self.fitFailed)
else:
# Use the old python threads + Queue
self.calc_fit.queue()
self.calc_fit.ready(2.5)
self.communicate.statusBarUpdateSignal.emit('Fitting started...')
self.fit_started = True
# Disable some elements
self.disableInteractiveElements()
[docs] def stopFit(self):
"""
Attempt to stop the fitting thread
"""
if self.calc_fit is None or not self.calc_fit.isrunning():
return
self.calc_fit.stop()
#re-enable the Fit button
self.enableInteractiveElements()
msg = "Fitting cancelled."
self.communicate.statusBarUpdateSignal.emit(msg)
[docs] def fitFailed(self, reason):
"""
"""
self.enableInteractiveElements()
msg = "Fitting failed with: "+ str(reason)
self.communicate.statusBarUpdateSignal.emit(msg)
[docs] def batchFittingCompleted(self, result):
"""
Send the finish message from calculate threads to main thread
"""
if result is None:
result = tuple()
self.batchFittingFinishedSignal.emit(result)
[docs] def batchFitComplete(self, result):
"""
Receive and display batch fitting results
"""
#re-enable the Fit button
self.enableInteractiveElements()
if len(result) == 0:
msg = "Fitting failed."
self.communicate.statusBarUpdateSignal.emit(msg)
return
# Show the grid panel
page_name = "BatchPage" + str(self.tab_id)
results = copy.deepcopy(result[0])
results.append(page_name)
self.communicate.sendDataToGridSignal.emit(results)
elapsed = result[1]
msg = "Fitting completed successfully in: %s s.\n" % GuiUtils.formatNumber(elapsed)
self.communicate.statusBarUpdateSignal.emit(msg)
# Run over the list of results and update the items
for res_index, res_list in enumerate(result[0]):
# results
res = res_list[0]
param_dict = self.paramDictFromResults(res)
# create local kernel_module
kernel_module = FittingUtilities.updateKernelWithResults(self.kernel_module, param_dict)
# pull out current data
data = self._logic[res_index].data
# Switch indexes
self.data_index = res_index
# Recompute Q ranges
if self.data_is_loaded:
self.q_range_min, self.q_range_max, self.npts = self.logic.computeDataRange()
# Recalculate theories
method = self.complete1D if isinstance(self.data, Data1D) else self.complete2D
self.calculateQGridForModelExt(data=data, model=kernel_module, completefn=method, use_threads=False)
# Restore original kernel_module, so subsequent fits on the same model don't pick up the new params
if self.kernel_module is not None:
self.kernel_module = copy.deepcopy(self.kernel_module_copy)
[docs] def paramDictFromResults(self, results):
"""
Given the fit results structure, pull out optimized parameters and return them as nicely
formatted dict
"""
if results.fitness is None or \
not np.isfinite(results.fitness) or \
np.any(results.pvec is None) or \
not np.all(np.isfinite(results.pvec)):
msg = "Fitting did not converge!"
self.communicate.statusBarUpdateSignal.emit(msg)
msg += results.mesg
logger.error(msg)
return
param_list = results.param_list # ['radius', 'radius.width']
param_values = results.pvec # array([ 0.36221662, 0.0146783 ])
param_stderr = results.stderr # array([ 1.71293015, 1.71294233])
params_and_errors = list(zip(param_values, param_stderr))
param_dict = dict(zip(param_list, params_and_errors))
return param_dict
[docs] def fittingCompleted(self, result):
"""
Send the finish message from calculate threads to main thread
"""
if result is None:
result = tuple()
self.fittingFinishedSignal.emit(result)
[docs] def fitComplete(self, result):
"""
Receive and display fitting results
"result" is a tuple of actual result list and the fit time in seconds
"""
#re-enable the Fit button
self.enableInteractiveElements()
if len(result) == 0:
msg = "Fitting failed."
self.communicate.statusBarUpdateSignal.emit(msg)
return
# Don't recalculate chi2 - it's in res.fitness already
self.fitResults = True
res_list = result[0][0]
res = res_list[0]
self.chi2 = res.fitness
param_dict = self.paramDictFromResults(res)
if param_dict is None:
return
# Show bumps convergence plots
self.communicate.resultPlotUpdateSignal.emit(result[0])
elapsed = result[1]
if self.calc_fit is not None and self.calc_fit._interrupting:
msg = "Fitting cancelled by user after: %s s." % GuiUtils.formatNumber(elapsed)
logger.warning("\n"+msg+"\n")
else:
msg = "Fitting completed successfully in: %s s." % GuiUtils.formatNumber(elapsed)
self.communicate.statusBarUpdateSignal.emit(msg)
# Dictionary of fitted parameter: value, error
# e.g. param_dic = {"sld":(1.703, 0.0034), "length":(33.455, -0.0983)}
self.updateModelFromList(param_dict)
self.updatePolyModelFromList(param_dict)
self.updateMagnetModelFromList(param_dict)
# update charts
self.onPlot()
# Read only value - we can get away by just printing it here
chi2_repr = GuiUtils.formatNumber(self.chi2, high=True)
self.lblChi2Value.setText(chi2_repr)
[docs] def prepareFitters(self, fitter=None, fit_id=0):
"""
Prepare the Fitter object for use in fitting
"""
# fitter = None -> single/batch fitting
# fitter = Fit() -> simultaneous fitting
# Data going in
data = self.logic.data
model = copy.deepcopy(self.kernel_module)
qmin = self.q_range_min
qmax = self.q_range_max
params_to_fit = copy.deepcopy(self.main_params_to_fit)
if self.chkPolydispersity.isChecked():
params_to_fit += self.poly_params_to_fit
if self.chkMagnetism.isChecked() and self.canHaveMagnetism():
params_to_fit += self.magnet_params_to_fit
if not params_to_fit:
raise ValueError('Fitting requires at least one parameter to optimize.')
# Get the constraints.
constraints = self.getComplexConstraintsForModel()
if fitter is None:
# For single fits - check for inter-model constraints
constraints = self.getConstraintsForFitting()
smearer = self.smearing_widget.smearer()
handler = None
batch_inputs = {}
batch_outputs = {}
fitters = []
# order datasets if chain fit
order = self.all_data
if self.is_chain_fitting:
order = self.order_widget.ordering()
for fit_index in order:
fitter_single = Fit() if fitter is None else fitter
data = GuiUtils.dataFromItem(fit_index)
# Potential weights added directly to data
weighted_data = self.addWeightingToData(data)
try:
fitter_single.set_model(model, fit_id, params_to_fit, data=weighted_data,
constraints=constraints)
except ValueError as ex:
raise ValueError("Setting model parameters failed with: %s" % ex)
fitter_single.set_data(data=weighted_data, id=fit_id, smearer=smearer, qmin=qmin,
qmax=qmax)
fitter_single.select_problem_for_fit(id=fit_id, value=1)
if fitter is None:
# Assign id to the new fitter only
fitter_single.fitter_id = [self.page_id]
fit_id += 1
fitters.append(fitter_single)
return fitters, fit_id
[docs] def iterateOverModel(self, func):
"""
Take func and throw it inside the model row loop
"""
for row_i in range(self._model_model.rowCount()):
func(row_i)
[docs] def updateModelFromList(self, param_dict):
"""
Update the model with new parameters, create the errors column
"""
assert isinstance(param_dict, dict)
if not dict:
return
def updateFittedValues(row):
# Utility function for main model update
# internal so can use closure for param_dict
param_name = str(self._model_model.item(row, 0).text())
if not self.isCheckable(row) or param_name not in list(param_dict.keys()):
return
# modify the param value
param_repr = GuiUtils.formatNumber(param_dict[param_name][0], high=True)
self._model_model.item(row, 1).setText(param_repr)
self.kernel_module.setParam(param_name, param_dict[param_name][0])
if self.has_error_column:
error_repr = GuiUtils.formatNumber(param_dict[param_name][1], high=True)
self._model_model.item(row, 2).setText(error_repr)
def updatePolyValues(row):
# Utility function for updateof polydispersity part of the main model
param_name = str(self._model_model.item(row, 0).text())+'.width'
if not self.isCheckable(row) or param_name not in list(param_dict.keys()):
return
# modify the param value
param_repr = GuiUtils.formatNumber(param_dict[param_name][0], high=True)
self._model_model.item(row, 0).child(0).child(0,1).setText(param_repr)
# modify the param error
if self.has_error_column:
error_repr = GuiUtils.formatNumber(param_dict[param_name][1], high=True)
self._model_model.item(row, 0).child(0).child(0,2).setText(error_repr)
def createErrorColumn(row):
# Utility function for error column update
item = QtGui.QStandardItem()
def createItem(param_name):
if param_name not in self.main_params_to_fit:
error_repr = ""
else:
error_repr = GuiUtils.formatNumber(param_dict[param_name][1], high=True)
item.setText(error_repr)
def curr_param():
return str(self._model_model.item(row, 0).text())
[createItem(param_name) for param_name in list(param_dict.keys()) if curr_param() == param_name]
error_column.append(item)
def createPolyErrorColumn(row):
# Utility function for error column update in the polydispersity sub-rows
# NOTE: only creates empty items; updatePolyValues adds the error value
item = self._model_model.item(row, 0)
if not item.hasChildren():
return
poly_item = item.child(0)
if not poly_item.hasChildren():
return
poly_item.insertColumn(2, [QtGui.QStandardItem("")])
def deletePolyErrorColumn(row):
# Utility function for error column removal in the polydispersity sub-rows
item = self._model_model.item(row, 0)
if not item.hasChildren():
return
poly_item = item.child(0)
if not poly_item.hasChildren():
return
poly_item.removeColumn(2)
if self.has_error_column:
# remove previous entries
self._model_model.removeColumn(2)
self.iterateOverModel(deletePolyErrorColumn)
#if not self.has_error_column:
# create top-level error column
error_column = []
self.lstParams.itemDelegate().addErrorColumn()
self.iterateOverModel(createErrorColumn)
self._model_model.insertColumn(2, error_column)
FittingUtilities.addErrorHeadersToModel(self._model_model)
# create error column in polydispersity sub-rows
self.iterateOverModel(createPolyErrorColumn)
self.has_error_column = True
# block signals temporarily, so we don't end up
# updating charts with every single model change on the end of fitting
self._model_model.dataChanged.disconnect()
self.iterateOverModel(updateFittedValues)
self.iterateOverModel(updatePolyValues)
self._model_model.dataChanged.connect(self.onMainParamsChange)
[docs] def iterateOverPolyModel(self, func):
"""
Take func and throw it inside the poly model row loop
"""
for row_i in range(self._poly_model.rowCount()):
func(row_i)
[docs] def updatePolyModelFromList(self, param_dict):
"""
Update the polydispersity model with new parameters, create the errors column
"""
assert isinstance(param_dict, dict)
if not dict:
return
def updateFittedValues(row_i):
# Utility function for main model update
# internal so can use closure for param_dict
if row_i >= self._poly_model.rowCount():
return
param_name = str(self._poly_model.item(row_i, 0).text()).rsplit()[-1] + '.width'
if param_name not in list(param_dict.keys()):
return
# modify the param value
param_repr = GuiUtils.formatNumber(param_dict[param_name][0], high=True)
self._poly_model.item(row_i, 1).setText(param_repr)
self.kernel_module.setParam(param_name, param_dict[param_name][0])
if self.has_poly_error_column:
error_repr = GuiUtils.formatNumber(param_dict[param_name][1], high=True)
self._poly_model.item(row_i, 2).setText(error_repr)
def createErrorColumn(row_i):
# Utility function for error column update
if row_i >= self._poly_model.rowCount():
return
item = QtGui.QStandardItem()
def createItem(param_name):
if param_name in self.poly_params_to_fit:
error_repr = GuiUtils.formatNumber(param_dict[param_name][1], high=True)
else:
error_repr = ""
item.setText(error_repr)
def poly_param():
return str(self._poly_model.item(row_i, 0).text()).rsplit()[-1] + '.width'
[createItem(param_name) for param_name in list(param_dict.keys()) if poly_param() == param_name]
error_column.append(item)
self.iterateOverPolyModel(updateFittedValues)
if self.has_poly_error_column:
self._poly_model.removeColumn(2)
self.lstPoly.itemDelegate().addErrorColumn()
error_column = []
self.iterateOverPolyModel(createErrorColumn)
# switch off reponse to model change
self._poly_model.insertColumn(2, error_column)
FittingUtilities.addErrorPolyHeadersToModel(self._poly_model)
self.has_poly_error_column = True
[docs] def iterateOverMagnetModel(self, func):
"""
Take func and throw it inside the magnet model row loop
"""
for row_i in range(self._magnet_model.rowCount()):
func(row_i)
[docs] def updateMagnetModelFromList(self, param_dict):
"""
Update the magnetic model with new parameters, create the errors column
"""
assert isinstance(param_dict, dict)
if not dict:
return
if self._magnet_model.rowCount() == 0:
return
def updateFittedValues(row):
# Utility function for main model update
# internal so can use closure for param_dict
if self._magnet_model.item(row, 0) is None:
return
param_name = str(self._magnet_model.item(row, 0).text())
if param_name not in list(param_dict.keys()):
return
# modify the param value
param_repr = GuiUtils.formatNumber(param_dict[param_name][0], high=True)
self._magnet_model.item(row, 1).setText(param_repr)
self.kernel_module.setParam(param_name, param_dict[param_name][0])
if self.has_magnet_error_column:
error_repr = GuiUtils.formatNumber(param_dict[param_name][1], high=True)
self._magnet_model.item(row, 2).setText(error_repr)
def createErrorColumn(row):
# Utility function for error column update
item = QtGui.QStandardItem()
def createItem(param_name):
if param_name in self.magnet_params_to_fit:
error_repr = GuiUtils.formatNumber(param_dict[param_name][1], high=True)
else:
error_repr = ""
item.setText(error_repr)
def curr_param():
return str(self._magnet_model.item(row, 0).text())
[createItem(param_name) for param_name in list(param_dict.keys()) if curr_param() == param_name]
error_column.append(item)
self.iterateOverMagnetModel(updateFittedValues)
if self.has_magnet_error_column:
self._magnet_model.removeColumn(2)
self.lstMagnetic.itemDelegate().addErrorColumn()
error_column = []
self.iterateOverMagnetModel(createErrorColumn)
# switch off reponse to model change
self._magnet_model.insertColumn(2, error_column)
FittingUtilities.addErrorHeadersToModel(self._magnet_model)
self.has_magnet_error_column = True
[docs] def onPlot(self):
"""
Plot the current set of data
"""
# Regardless of previous state, this should now be `plot show` functionality only
self.cmdPlot.setText("Show Plot")
# Force data recalculation so existing charts are updated
if not self.data_is_loaded:
self.showTheoryPlot()
else:
self.showPlot()
# This is an important processEvent.
# This allows charts to be properly updated in order
# of plots being applied.
QtWidgets.QApplication.processEvents()
self.recalculatePlotData() # recalc+plot theory again (2nd)
[docs] def onSmearingOptionsUpdate(self):
"""
React to changes in the smearing widget
"""
# update display
smearing, accuracy, smearing_min, smearing_max = self.smearing_widget.state()
self.lblCurrentSmearing.setText(smearing)
self.calculateQGridForModel()
[docs] def recalculatePlotData(self):
"""
Generate a new dataset for model
"""
if not self.data_is_loaded:
self.createDefaultDataset()
self.smearing_widget.updateData(self.data)
self.calculateQGridForModel()
[docs] def showTheoryPlot(self):
"""
Show the current theory plot in MPL
"""
# Show the chart if ready
if self.theory_item is None:
self.recalculatePlotData()
elif self.model_data:
self._requestPlots(self.model_data.filename, self.theory_item.model())
[docs] def showPlot(self):
"""
Show the current plot in MPL
"""
# Show the chart if ready
data_to_show = self.data
# Any models for this page
current_index = self.all_data[self.data_index]
item = self._requestPlots(self.data.filename, current_index.model())
if item:
# fit+data has not been shown - show just data
self.communicate.plotRequestedSignal.emit([item, data_to_show], self.tab_id)
def _requestPlots(self, item_name, item_model):
"""
Emits plotRequestedSignal for all plots found in the given model under the provided item name.
"""
fitpage_name = self.kernel_module.name
plots = GuiUtils.plotsFromFilename(item_name, item_model)
# Has the fitted data been shown?
data_shown = False
item = None
for item, plot in plots.items():
if fitpage_name in plot.name:
data_shown = True
self.communicate.plotRequestedSignal.emit([item, plot], self.tab_id)
# return the last data item seen, if nothing was plotted; supposed to be just data)
return None if data_shown else item
[docs] def onOptionsUpdate(self):
"""
Update local option values and replot
"""
self.q_range_min, self.q_range_max, self.npts, self.log_points, self.weighting = \
self.options_widget.state()
# set Q range labels on the main tab
self.lblMinRangeDef.setText(GuiUtils.formatNumber(self.q_range_min, high=True))
self.lblMaxRangeDef.setText(GuiUtils.formatNumber(self.q_range_max, high=True))
self.recalculatePlotData()
[docs] def setDefaultStructureCombo(self):
"""
Fill in the structure factors combo box with defaults
"""
structure_factor_list = self.master_category_dict.pop(CATEGORY_STRUCTURE)
factors = [factor[0] for factor in structure_factor_list]
factors.insert(0, STRUCTURE_DEFAULT)
self.cbStructureFactor.clear()
self.cbStructureFactor.addItems(sorted(factors))
[docs] def createDefaultDataset(self):
"""
Generate default Dataset 1D/2D for the given model
"""
# Create default datasets if no data passed
if self.is2D:
qmax = self.q_range_max/np.sqrt(2)
qstep = self.npts
self.logic.createDefault2dData(qmax, qstep, self.tab_id)
return
elif self.log_points:
qmin = -10.0 if self.q_range_min < 1.e-10 else np.log10(self.q_range_min)
qmax = 10.0 if self.q_range_max > 1.e10 else np.log10(self.q_range_max)
interval = np.logspace(start=qmin, stop=qmax, num=self.npts, endpoint=True, base=10.0)
else:
interval = np.linspace(start=self.q_range_min, stop=self.q_range_max,
num=self.npts, endpoint=True)
self.logic.createDefault1dData(interval, self.tab_id)
[docs] def readCategoryInfo(self):
"""
Reads the categories in from file
"""
self.master_category_dict = defaultdict(list)
self.by_model_dict = defaultdict(list)
self.model_enabled_dict = defaultdict(bool)
categorization_file = CategoryInstaller.get_user_file()
if not os.path.isfile(categorization_file):
categorization_file = CategoryInstaller.get_default_file()
with open(categorization_file, 'rb') as cat_file:
self.master_category_dict = json.load(cat_file)
self.regenerateModelDict()
# Load the model dict
models = load_standard_models()
for model in models:
self.models[model.name] = model
self.readCustomCategoryInfo()
[docs] def readCustomCategoryInfo(self):
"""
Reads the custom model category
"""
#Looking for plugins
self.plugins = list(self.custom_models.values())
plugin_list = []
for name, plug in self.custom_models.items():
self.models[name] = plug
plugin_list.append([name, True])
if plugin_list:
self.master_category_dict[CATEGORY_CUSTOM] = plugin_list
[docs] def regenerateModelDict(self):
"""
Regenerates self.by_model_dict which has each model name as the
key and the list of categories belonging to that model
along with the enabled mapping
"""
self.by_model_dict = defaultdict(list)
for category in self.master_category_dict:
for (model, enabled) in self.master_category_dict[category]:
self.by_model_dict[model].append(category)
self.model_enabled_dict[model] = enabled
[docs] def addBackgroundToModel(self, model):
"""
Adds background parameter with default values to the model
"""
assert isinstance(model, QtGui.QStandardItemModel)
checked_list = ['background', '0.001', '-inf', 'inf', '1/cm']
FittingUtilities.addCheckedListToModel(model, checked_list)
last_row = model.rowCount()-1
model.item(last_row, 0).setEditable(False)
model.item(last_row, 4).setEditable(False)
[docs] def addScaleToModel(self, model):
"""
Adds scale parameter with default values to the model
"""
assert isinstance(model, QtGui.QStandardItemModel)
checked_list = ['scale', '1.0', '0.0', 'inf', '']
FittingUtilities.addCheckedListToModel(model, checked_list)
last_row = model.rowCount()-1
model.item(last_row, 0).setEditable(False)
model.item(last_row, 4).setEditable(False)
[docs] def addWeightingToData(self, data):
"""
Adds weighting contribution to fitting data
"""
new_data = copy.deepcopy(data)
# Send original data for weighting
weight = FittingUtilities.getWeight(data=data, is2d=self.is2D, flag=self.weighting)
if self.is2D:
new_data.err_data = weight
else:
new_data.dy = weight
return new_data
[docs] def updateQRange(self):
"""
Updates Q Range display
"""
if self.data_is_loaded:
self.q_range_min, self.q_range_max, self.npts = self.logic.computeDataRange()
# set Q range labels on the main tab
self.lblMinRangeDef.setText(GuiUtils.formatNumber(self.q_range_min, high=True))
self.lblMaxRangeDef.setText(GuiUtils.formatNumber(self.q_range_max, high=True))
# set Q range labels on the options tab
self.options_widget.updateQRange(self.q_range_min, self.q_range_max, self.npts)
[docs] def SASModelToQModel(self, model_name, structure_factor=None):
"""
Setting model parameters into table based on selected category
"""
# Crete/overwrite model items
self._model_model.clear()
self._poly_model.clear()
self._magnet_model.clear()
if model_name is None:
if structure_factor not in (None, "None"):
# S(Q) on its own, treat the same as a form factor
self.kernel_module = None
self.fromStructureFactorToQModel(structure_factor)
else:
# No models selected
return
else:
self.fromModelToQModel(model_name)
self.addExtraShells()
# Allow the SF combobox visibility for the given sasmodel
self.enableStructureFactorControl(structure_factor)
# Add S(Q)
if self.cbStructureFactor.isEnabled():
structure_factor = self.cbStructureFactor.currentText()
self.fromStructureFactorToQModel(structure_factor)
# Add polydispersity to the model
self.poly_params = {}
self.setPolyModel()
# Add magnetic parameters to the model
self.magnet_params = {}
self.setMagneticModel()
# Now we claim the model has been loaded
self.model_is_loaded = True
# Change the model name to a monicker
self.kernel_module.name = self.modelName()
# Update the smearing tab
self.smearing_widget.updateKernelModel(kernel_model=self.kernel_module)
# (Re)-create headers
FittingUtilities.addHeadersToModel(self._model_model)
self.lstParams.header().setFont(self.boldFont)
[docs] def fromModelToQModel(self, model_name):
"""
Setting model parameters into QStandardItemModel based on selected model
"""
name = model_name
kernel_module = None
if self.cbCategory.currentText() == CATEGORY_CUSTOM:
# custom kernel load requires full path
name = os.path.join(models.find_plugins_dir(), model_name+".py")
try:
kernel_module = generate.load_kernel_module(name)
except ModuleNotFoundError as ex:
pass
except FileNotFoundError as ex:
# can happen when name attribute not the same as actual filename
pass
if kernel_module is None:
# mismatch between "name" attribute and actual filename.
curr_model = self.models[model_name]
name, _ = os.path.splitext(os.path.basename(curr_model.filename))
try:
kernel_module = generate.load_kernel_module(name)
except ModuleNotFoundError as ex:
logger.error("Can't find the model "+ str(ex))
return
if hasattr(kernel_module, 'parameters'):
# built-in and custom models
self.model_parameters = modelinfo.make_parameter_table(getattr(kernel_module, 'parameters', []))
elif hasattr(kernel_module, 'model_info'):
# for sum/multiply models
self.model_parameters = kernel_module.model_info.parameters
elif hasattr(kernel_module, 'Model') and hasattr(kernel_module.Model, "_model_info"):
# this probably won't work if there's no model_info, but just in case
self.model_parameters = kernel_module.Model._model_info.parameters
else:
# no parameters - default to blank table
msg = "No parameters found in model '{}'.".format(model_name)
logger.warning(msg)
self.model_parameters = modelinfo.ParameterTable([])
# Instantiate the current sasmodel
self.kernel_module = self.models[model_name]()
# Change the model name to a monicker
self.kernel_module.name = self.modelName()
# Explicitly add scale and background with default values
temp_undo_state = self.undo_supported
self.undo_supported = False
self.addScaleToModel(self._model_model)
self.addBackgroundToModel(self._model_model)
self.undo_supported = temp_undo_state
self.shell_names = self.shellNamesList()
# Add heading row
FittingUtilities.addHeadingRowToModel(self._model_model, model_name)
# Update the QModel
FittingUtilities.addParametersToModel(
self.model_parameters,
self.kernel_module,
self.is2D,
self._model_model,
self.lstParams)
[docs] def fromStructureFactorToQModel(self, structure_factor):
"""
Setting model parameters into QStandardItemModel based on selected structure factor
"""
if structure_factor is None or structure_factor=="None":
return
product_params = None
kernel_module = self.models[structure_factor]()
if self.kernel_module is None:
self.kernel_module = kernel_module
# Structure factor is the only selected model; build it and show all its params
self.kernel_module.name = self.modelName()
s_params = self.kernel_module._model_info.parameters
else:
# Assure we only have one volfraction shown
s_params, product_params = self._volfraction_hack(kernel_module)
# Add heading row
FittingUtilities.addHeadingRowToModel(self._model_model, structure_factor)
# Get new rows for QModel
# Any renamed parameters are stored as data in the relevant item, for later handling
FittingUtilities.addSimpleParametersToModel(
parameters=s_params,
is2D=self.is2D,
parameters_original=None,
model=self._model_model,
view=self.lstParams)
# Insert product-only params into QModel
if product_params:
prod_rows = FittingUtilities.addSimpleParametersToModel(
parameters=product_params,
is2D=self.is2D,
parameters_original=None,
model=self._model_model,
view=self.lstParams,
row_num=2)
# Since this all happens after shells are dealt with and we've inserted rows, fix this counter
self._n_shells_row += len(prod_rows)
def _volfraction_hack(self, s_kernel):
"""
Only show volfraction once if it appears in both P and S models.
Issues SV:1280, SV:1295, SM:219, SM:199, SM:101
"""
from sasmodels.product import VOLFRAC_ID, RADIUS_ID, RADIUS_MODE_ID, STRUCTURE_MODE_ID
product_params = None
p_kernel = self.kernel_module
# need to reset multiplicity to get the right product
if p_kernel.is_multiplicity_model:
p_kernel.multiplicity = p_kernel.multiplicity_info.number
self.kernel_module = MultiplicationModel(p_kernel, s_kernel)
# Modify the name to correspond to shown items
self.kernel_module.name = self.modelName()
# TODO: set model layout in sasmodels
info = self.kernel_module._model_info
p_info = p_kernel._model_info
s_info = s_kernel._model_info
def par_index(info, key):
for k, p in enumerate(info.parameters.kernel_parameters):
if p.id == key:
return k
return -1
p_volfrac_id = par_index(p_info, VOLFRAC_ID)
s_volfrac_id = par_index(s_info, VOLFRAC_ID)
s_pars = s_info.parameters.kernel_parameters[:]
if p_volfrac_id >= 0 and s_volfrac_id >= 0:
del s_pars[s_volfrac_id]
er_mode_id = par_index(info, RADIUS_MODE_ID)
interaction_mode_id = par_index(info, STRUCTURE_MODE_ID)
extras = []
if interaction_mode_id >= 0:
extras.append(info.parameters.kernel_parameters[interaction_mode_id])
if er_mode_id >= 0:
extras.append(info.parameters.kernel_parameters[er_mode_id])
s_params = modelinfo.ParameterTable(s_pars)
product_params = modelinfo.ParameterTable(extras)
return (s_params, product_params)
[docs] def haveParamsToFit(self):
"""
Finds out if there are any parameters ready to be fitted
"""
if not self.logic.data_is_loaded:
return False
if self.main_params_to_fit:
return True
if self.chkPolydispersity.isChecked() and self.poly_params_to_fit:
return True
if self.chkMagnetism.isChecked() and self.canHaveMagnetism() and self.magnet_params_to_fit:
return True
return False
[docs] def onMainParamsChange(self, top, bottom):
"""
Callback method for updating the sasmodel parameters with the GUI values
"""
item = self._model_model.itemFromIndex(top)
model_column = item.column()
if model_column == 0:
self.checkboxSelected(item)
self.cmdFit.setEnabled(self.haveParamsToFit())
# Update state stack
self.updateUndo()
return
model_row = item.row()
name_index = self._model_model.index(model_row, 0)
name_item = self._model_model.itemFromIndex(name_index)
# Extract changed value.
try:
value = GuiUtils.toDouble(item.text())
except TypeError:
# Unparsable field
return
# if the item has user data, this is the actual parameter name (e.g. to handle duplicate names)
if name_item.data(QtCore.Qt.UserRole):
parameter_name = str(name_item.data(QtCore.Qt.UserRole))
else:
parameter_name = str(self._model_model.data(name_index))
# Update the parameter value - note: this supports +/-inf as well
param_column = self.lstParams.itemDelegate().param_value
min_column = self.lstParams.itemDelegate().param_min
max_column = self.lstParams.itemDelegate().param_max
if model_column == param_column:
# don't try to update multiplicity counters if they aren't there.
# Note that this will fail for proper bad update where the model
# doesn't contain multiplicity parameter
self.kernel_module.setParam(parameter_name, value)
elif model_column == min_column:
# min/max to be changed in self.kernel_module.details[parameter_name] = ['Ang', 0.0, inf]
self.kernel_module.details[parameter_name][1] = value
elif model_column == max_column:
self.kernel_module.details[parameter_name][2] = value
else:
# don't update the chart
return
# TODO: magnetic params in self.kernel_module.details['M0:parameter_name'] = value
# TODO: multishell params in self.kernel_module.details[??] = value
# handle display of effective radius parameter according to radius_effective_mode; pass ER into model if
# necessary
self.processEffectiveRadius()
# Force the chart update when actual parameters changed
if model_column == 1:
self.recalculatePlotData()
# Update state stack
self.updateUndo()
[docs] def processEffectiveRadius(self):
"""
Checks the value of radius_effective_mode, if existent, and processes radius_effective as necessary.
* mode == 0: This means 'unconstrained'; ensure use can specify ER.
* mode > 0: This means it is constrained to a P(Q)-computed value in sasmodels; prevent user from editing ER.
Note: If ER has been computed, it is passed back to SasView as an intermediate result. That value must be
displayed for the user; that is not dealt with here, but in complete1D.
"""
ER_row = self.getRowFromName("radius_effective")
if ER_row is None:
return
ER_mode_row = self.getRowFromName("radius_effective_mode")
if ER_mode_row is None:
return
try:
ER_mode = int(self._model_model.item(ER_mode_row, 1).text())
except ValueError:
logging.error("radius_effective_mode was set to an invalid value.")
return
if ER_mode == 0:
# ensure the ER value can be modified by user
self.setParamEditableByRow(ER_row, True)
elif ER_mode > 0:
# ensure the ER value cannot be modified by user
self.setParamEditableByRow(ER_row, False)
else:
logging.error("radius_effective_mode was set to an invalid value.")
[docs] def setParamEditableByRow(self, row, editable=True):
"""
Sets whether the user can edit a parameter in the table. If they cannot, the parameter name's font is changed,
the value itself cannot be edited if clicked on, and the parameter may not be fitted.
"""
item_name = self._model_model.item(row, 0)
item_value = self._model_model.item(row, 1)
item_value.setEditable(editable)
if editable:
# reset font
item_name.setFont(QtGui.QFont())
# reset colour
item_name.setForeground(QtGui.QBrush())
# make checkable
item_name.setCheckable(True)
else:
# change font
font = QtGui.QFont()
font.setItalic(True)
item_name.setFont(font)
# change colour
item_name.setForeground(QtGui.QBrush(QtGui.QColor(50, 50, 50)))
# make not checkable (and uncheck)
item_name.setCheckState(QtCore.Qt.Unchecked)
item_name.setCheckable(False)
[docs] def selectCheckbox(self, row):
"""
Select the checkbox in given row.
"""
assert 0<= row <= self._model_model.rowCount()
index = self._model_model.index(row, 0)
item = self._model_model.itemFromIndex(index)
item.setCheckState(QtCore.Qt.Checked)
[docs] def checkboxSelected(self, item):
# Assure we're dealing with checkboxes
if not item.isCheckable():
return
status = item.checkState()
# If multiple rows selected - toggle all of them, filtering uncheckable
# Convert to proper indices and set requested enablement
self.setParameterSelection(status)
# update the list of parameters to fit
self.main_params_to_fit = self.checkedListFromModel(self._model_model)
[docs] def checkedListFromModel(self, model):
"""
Returns list of checked parameters for given model
"""
def isChecked(row):
return model.item(row, 0).checkState() == QtCore.Qt.Checked
return [str(model.item(row_index, 0).text())
for row_index in range(model.rowCount())
if isChecked(row_index)]
[docs] def createNewIndex(self, fitted_data):
"""
Create a model or theory index with passed Data1D/Data2D
"""
if self.data_is_loaded:
if not fitted_data.name:
name = self.nameForFittedData(self.data.filename)
fitted_data.title = name
fitted_data.name = name
fitted_data.filename = name
fitted_data.symbol = "Line"
self.updateModelIndex(fitted_data)
else:
if not fitted_data.name:
name = self.nameForFittedData(self.kernel_module.id)
else:
name = fitted_data.name
fitted_data.title = name
fitted_data.filename = name
fitted_data.symbol = "Line"
self.createTheoryIndex(fitted_data)
# Switch to the theory tab for user's glee
self.communicate.changeDataExplorerTabSignal.emit(1)
[docs] def updateModelIndex(self, fitted_data):
"""
Update a QStandardModelIndex containing model data
"""
name = self.nameFromData(fitted_data)
# Make this a line if no other defined
if hasattr(fitted_data, 'symbol') and fitted_data.symbol is None:
fitted_data.symbol = 'Line'
# Notify the GUI manager so it can update the main model in DataExplorer
GuiUtils.updateModelItemWithPlot(self.all_data[self.data_index], fitted_data, name)
[docs] def createTheoryIndex(self, fitted_data):
"""
Create a QStandardModelIndex containing model data
"""
name = self.nameFromData(fitted_data)
# Modify the item or add it if new
theory_item = GuiUtils.createModelItemWithPlot(fitted_data, name=name)
self.communicate.updateTheoryFromPerspectiveSignal.emit(theory_item)
[docs] def setTheoryItem(self, item):
"""
Reset the theory item based on the data explorer update
"""
self.theory_item = item
[docs] def nameFromData(self, fitted_data):
"""
Return name for the dataset. Terribly impure function.
"""
if fitted_data.name is None:
name = self.nameForFittedData(self.logic.data.filename)
fitted_data.title = name
fitted_data.name = name
fitted_data.filename = name
else:
name = fitted_data.name
return name
[docs] def methodCalculateForData(self):
'''return the method for data calculation'''
return Calc1D if isinstance(self.data, Data1D) else Calc2D
[docs] def methodCompleteForData(self):
'''return the method for result parsin on calc complete '''
return self.completed1D if isinstance(self.data, Data1D) else self.completed2D
[docs] def updateKernelModelWithExtraParams(self, model=None):
"""
Updates kernel model 'model' with extra parameters from
the polydisp and magnetism tab, if the tabs are enabled
"""
if model is None: return
if not hasattr(model, 'setParam'): return
# add polydisperse parameters if asked
if self.chkPolydispersity.isChecked() and self._poly_model.rowCount() > 0:
for key, value in self.poly_params.items():
model.setParam(key, value)
# add magnetic params if asked
if self.chkMagnetism.isChecked() and self.canHaveMagnetism() and self._magnet_model.rowCount() > 0:
for key, value in self.magnet_params.items():
model.setParam(key, value)
[docs] def calculateQGridForModelExt(self, data=None, model=None, completefn=None, use_threads=True):
"""
Wrapper for Calc1D/2D calls
"""
if data is None:
data = self.data
if model is None:
model = copy.deepcopy(self.kernel_module)
self.updateKernelModelWithExtraParams(model)
if completefn is None:
completefn = self.methodCompleteForData()
smearer = self.smearing_widget.smearer()
weight = FittingUtilities.getWeight(data=data, is2d=self.is2D, flag=self.weighting)
# Disable buttons/table
self.disableInteractiveElementsOnCalculate()
# Awful API to a backend method.
calc_thread = self.methodCalculateForData()(data=data,
model=model,
page_id=0,
qmin=self.q_range_min,
qmax=self.q_range_max,
smearer=smearer,
state=None,
weight=weight,
fid=None,
toggle_mode_on=False,
completefn=completefn,
update_chisqr=True,
exception_handler=self.calcException,
source=None)
if use_threads:
if LocalConfig.USING_TWISTED:
# start the thread with twisted
thread = threads.deferToThread(calc_thread.compute)
thread.addCallback(completefn)
thread.addErrback(self.calculateDataFailed)
else:
# Use the old python threads + Queue
calc_thread.queue()
calc_thread.ready(2.5)
else:
results = calc_thread.compute()
completefn(results)
[docs] def calculateQGridForModel(self):
"""
Prepare the fitting data object, based on current ModelModel
"""
if self.kernel_module is None:
return
self.calculateQGridForModelExt()
[docs] def calculateDataFailed(self, reason):
"""
Thread returned error
"""
# Bring the GUI to normal state
self.enableInteractiveElements()
print("Calculate Data failed with ", reason)
def _appendPlotsPolyDisp(self, new_plots, return_data, fitted_data):
"""
Internal helper for 1D and 2D for creating plots of the polydispersity distribution for
parameters which have a polydispersity enabled.
"""
for plot in FittingUtilities.plotPolydispersities(return_data.get('model', None)):
data_id = fitted_data.id.split()
plot.id = "{} [{}] {}".format(data_id[0], plot.name, " ".join(data_id[1:]))
data_name = fitted_data.name.split()
plot.name = " ".join([data_name[0], plot.name] + data_name[1:])
self.createNewIndex(plot)
new_plots.append(plot)
[docs] def complete1D(self, return_data):
"""
Plot the current 1D data
"""
# Bring the GUI to normal state
self.enableInteractiveElements()
if return_data is None:
return
fitted_data = self.logic.new1DPlot(return_data, self.tab_id)
# Fits of Sesans data are in real space
if return_data["data"].isSesans:
fitted_data.xtransform="x"
fitted_data.ytransform="y"
# assure the current index is set properly for batch
if len(self._logic) > 1:
for i, logic in enumerate(self._logic):
if logic.data.name in fitted_data.name:
self.data_index = i
residuals = self.calculateResiduals(fitted_data)
self.model_data = fitted_data
new_plots = [fitted_data]
if residuals is not None:
new_plots.append(residuals)
if self.data_is_loaded:
# delete any plots associated with the data that were not updated
# (e.g. to remove beta(Q), S_eff(Q))
GuiUtils.deleteRedundantPlots(self.all_data[self.data_index], new_plots)
pass
else:
# delete theory items for the model, in order to get rid of any
# redundant items, e.g. beta(Q), S_eff(Q)
self.communicate.deleteIntermediateTheoryPlotsSignal.emit(self.kernel_module.id)
self._appendPlotsPolyDisp(new_plots, return_data, fitted_data)
# Create plots for intermediate product data
plots = self.logic.new1DProductPlots(return_data, self.tab_id)
for plot in plots:
plot.symbol = "Line"
self.createNewIndex(plot)
new_plots.append(plot)
for plot in new_plots:
self.communicate.plotUpdateSignal.emit([plot])
QtWidgets.QApplication.processEvents()
# Update radius_effective if relevant
self.updateEffectiveRadius(return_data)
[docs] def complete2D(self, return_data):
"""
Plot the current 2D data
"""
# Bring the GUI to normal state
self.enableInteractiveElements()
if return_data is None:
return
fitted_data = self.logic.new2DPlot(return_data)
# assure the current index is set properly for batch
if len(self._logic) > 1:
for i, logic in enumerate(self._logic):
if logic.data.name in fitted_data.name:
self.data_index = i
residuals = self.calculateResiduals(fitted_data)
self.model_data = fitted_data
new_plots = [fitted_data]
if residuals is not None:
new_plots.append(residuals)
self._appendPlotsPolyDisp(new_plots, return_data, fitted_data)
# Update/generate plots
for plot in new_plots:
self.communicate.plotUpdateSignal.emit([plot])
[docs] def updateEffectiveRadius(self, return_data):
"""
Given return data from sasmodels, update the effective radius parameter in the GUI table with the new
calculated value as returned by sasmodels (if the value was returned).
"""
ER_mode_row = self.getRowFromName("radius_effective_mode")
if ER_mode_row is None:
return
try:
ER_mode = int(self._model_model.item(ER_mode_row, 1).text())
except ValueError:
logging.error("radius_effective_mode was set to an invalid value.")
return
if ER_mode < 1:
# does not need updating if it is not being computed
return
ER_row = self.getRowFromName("radius_effective")
if ER_row is None:
return
scalar_results = self.logic.getScalarIntermediateResults(return_data)
ER_value = scalar_results.get("radius_effective")
if ER_value is None:
return
# ensure the model does not recompute when updating the value
self._model_model.blockSignals(True)
self._model_model.item(ER_row, 1).setText(str(ER_value))
self._model_model.blockSignals(False)
# ensure the view is updated immediately
self._model_model.layoutChanged.emit()
[docs] def calculateResiduals(self, fitted_data):
"""
Calculate and print Chi2 and display chart of residuals. Returns residuals plot object.
"""
# Create a new index for holding data
fitted_data.symbol = "Line"
# Modify fitted_data with weighting
weighted_data = self.addWeightingToData(fitted_data)
self.createNewIndex(weighted_data)
# Plot residuals if actual data
if not self.data_is_loaded:
return
# Calculate difference between return_data and logic.data
weights = FittingUtilities.getWeight(self.data, self.is2D, flag = self.weighting)
# Recalculate chi2 only for manual parameter change, not after fitting
if not self.fitResults:
self.chi2 = FittingUtilities.calculateChi2(weighted_data, self.data, weights)
# Update the control
chi2_repr = "---" if self.chi2 is None else GuiUtils.formatNumber(self.chi2, high=True)
self.lblChi2Value.setText(chi2_repr)
self.fitResults = False
residuals_plot = FittingUtilities.plotResiduals(self.data, fitted_data, weights)
if residuals_plot is None:
return
residuals_plot.id = "Residual " + residuals_plot.id
residuals_plot.plot_role = Data1D.ROLE_RESIDUAL
self.createNewIndex(residuals_plot)
return residuals_plot
[docs] def onCategoriesChanged(self):
"""
Reload the category/model comboboxes
"""
# Store the current combo indices
current_cat = self.cbCategory.currentText()
current_model = self.cbModel.currentText()
# reread the category file and repopulate the combo
self.cbCategory.blockSignals(True)
self.cbCategory.clear()
self.readCategoryInfo()
self.initializeCategoryCombo()
# Scroll back to the original index in Categories
new_index = self.cbCategory.findText(current_cat)
if new_index != -1:
self.cbCategory.setCurrentIndex(new_index)
self.cbCategory.blockSignals(False)
# ...and in the Models
self.cbModel.blockSignals(True)
new_index = self.cbModel.findText(current_model)
if new_index != -1:
self.cbModel.setCurrentIndex(new_index)
self.cbModel.blockSignals(False)
return
[docs] def calcException(self, etype, value, tb):
"""
Thread threw an exception.
"""
# Bring the GUI to normal state
self.enableInteractiveElements()
# TODO: remimplement thread cancellation
logger.error("".join(traceback.format_exception(etype, value, tb)))
[docs] def setTableProperties(self, table):
"""
Setting table properties
"""
# Table properties
table.verticalHeader().setVisible(False)
table.setAlternatingRowColors(True)
table.setSizePolicy(QtWidgets.QSizePolicy.MinimumExpanding, QtWidgets.QSizePolicy.Expanding)
table.setSelectionBehavior(QtWidgets.QAbstractItemView.SelectRows)
table.resizeColumnsToContents()
# Header
header = table.horizontalHeader()
header.setSectionResizeMode(QtWidgets.QHeaderView.ResizeToContents)
header.ResizeMode(QtWidgets.QHeaderView.Interactive)
# Qt5: the following 2 lines crash - figure out why!
# Resize column 0 and 7 to content
#header.setSectionResizeMode(0, QtWidgets.QHeaderView.ResizeToContents)
#header.setSectionResizeMode(7, QtWidgets.QHeaderView.ResizeToContents)
[docs] def setPolyModel(self):
"""
Set polydispersity values
"""
if not self.model_parameters:
return
self._poly_model.clear()
parameters = self.model_parameters.form_volume_parameters
if self.is2D:
parameters += self.model_parameters.orientation_parameters
[self.setPolyModelParameters(i, param) for i, param in \
enumerate(parameters) if param.polydisperse]
FittingUtilities.addPolyHeadersToModel(self._poly_model)
[docs] def setPolyModelParameters(self, i, param):
"""
Standard of multishell poly parameter driver
"""
param_name = param.name
# see it the parameter is multishell
if '[' in param.name:
# Skip empty shells
if self.current_shell_displayed == 0:
return
else:
# Create as many entries as current shells
for ishell in range(1, self.current_shell_displayed+1):
# Remove [n] and add the shell numeral
name = param_name[0:param_name.index('[')] + str(ishell)
self.addNameToPolyModel(i, name)
else:
# Just create a simple param entry
self.addNameToPolyModel(i, param_name)
[docs] def addNameToPolyModel(self, i, param_name):
"""
Creates a checked row in the poly model with param_name
"""
# Polydisp. values from the sasmodel
param_wname = param_name + '.width'
width = self.kernel_module.getParam(param_wname)
npts = self.kernel_module.getParam(param_name + '.npts')
nsigs = self.kernel_module.getParam(param_name + '.nsigmas')
_, min, max = self.kernel_module.details[param_wname]
# Update local param dict
self.poly_params[param_wname] = width
self.poly_params[param_name + '.npts'] = npts
self.poly_params[param_name + '.nsigmas'] = nsigs
# Construct a row with polydisp. related variable.
# This will get added to the polydisp. model
# Note: last argument needs extra space padding for decent display of the control
checked_list = ["Distribution of " + param_name, str(width),
str(min), str(max),
str(npts), str(nsigs), "gaussian ",'']
FittingUtilities.addCheckedListToModel(self._poly_model, checked_list)
# All possible polydisp. functions as strings in combobox
func = QtWidgets.QComboBox()
func.addItems([str(name_disp) for name_disp in POLYDISPERSITY_MODELS.keys()])
# Set the default index
func.setCurrentIndex(func.findText(DEFAULT_POLYDISP_FUNCTION))
ind = self._poly_model.index(i,self.lstPoly.itemDelegate().poly_function)
self.lstPoly.setIndexWidget(ind, func)
func.currentIndexChanged.connect(lambda: self.onPolyComboIndexChange(str(func.currentText()), i))
[docs] def onPolyFilenameChange(self, row_index):
"""
Respond to filename_updated signal from the delegate
"""
# For the given row, invoke the "array" combo handler
array_caption = 'array'
# Get the combo box reference
ind = self._poly_model.index(row_index, self.lstPoly.itemDelegate().poly_function)
widget = self.lstPoly.indexWidget(ind)
# Update the combo box so it displays "array"
widget.blockSignals(True)
widget.setCurrentIndex(self.lstPoly.itemDelegate().POLYDISPERSE_FUNCTIONS.index(array_caption))
widget.blockSignals(False)
# Invoke the file reader
self.onPolyComboIndexChange(array_caption, row_index)
[docs] def onPolyComboIndexChange(self, combo_string, row_index):
"""
Modify polydisp. defaults on function choice
"""
# Get npts/nsigs for current selection
param = self.model_parameters.form_volume_parameters[row_index]
file_index = self._poly_model.index(row_index, self.lstPoly.itemDelegate().poly_function)
combo_box = self.lstPoly.indexWidget(file_index)
try:
self.disp_model = POLYDISPERSITY_MODELS[combo_string]()
except IndexError:
logger.error("Error in setting the dispersion model. Reverting to Gaussian.")
self.disp_model = POLYDISPERSITY_MODELS['gaussian']()
def updateFunctionCaption(row):
# Utility function for update of polydispersity function name in the main model
if not self.isCheckable(row):
return
param_name = self._model_model.item(row, 0).text()
if param_name != param.name:
return
# Modify the param value
self._model_model.blockSignals(True)
if self.has_error_column:
# err column changes the indexing
self._model_model.item(row, 0).child(0).child(0,5).setText(combo_string)
else:
self._model_model.item(row, 0).child(0).child(0,4).setText(combo_string)
self._model_model.blockSignals(False)
if combo_string == 'array':
try:
# assure the combo is at the right index
combo_box.blockSignals(True)
combo_box.setCurrentIndex(combo_box.findText(combo_string))
combo_box.blockSignals(False)
# Load the file
self.loadPolydispArray(row_index)
# Update main model for display
self.iterateOverModel(updateFunctionCaption)
self.kernel_module.set_dispersion(param.name, self.disp_model)
# uncheck the parameter
self._poly_model.item(row_index, 0).setCheckState(QtCore.Qt.Unchecked)
# disable the row
lo = self.lstPoly.itemDelegate().poly_parameter
hi = self.lstPoly.itemDelegate().poly_function
self._poly_model.blockSignals(True)
[self._poly_model.item(row_index, i).setEnabled(False) for i in range(lo, hi)]
self._poly_model.blockSignals(False)
return
except IOError:
combo_box.setCurrentIndex(self.orig_poly_index)
# Pass for cancel/bad read
pass
else:
self.kernel_module.set_dispersion(param.name, self.disp_model)
# Enable the row in case it was disabled by Array
self._poly_model.blockSignals(True)
max_range = self.lstPoly.itemDelegate().poly_filename
[self._poly_model.item(row_index, i).setEnabled(True) for i in range(7)]
file_index = self._poly_model.index(row_index, self.lstPoly.itemDelegate().poly_filename)
self._poly_model.setData(file_index, "")
self._poly_model.blockSignals(False)
npts_index = self._poly_model.index(row_index, self.lstPoly.itemDelegate().poly_npts)
nsigs_index = self._poly_model.index(row_index, self.lstPoly.itemDelegate().poly_nsigs)
npts = POLYDISPERSITY_MODELS[str(combo_string)].default['npts']
nsigs = POLYDISPERSITY_MODELS[str(combo_string)].default['nsigmas']
self._poly_model.setData(npts_index, npts)
self._poly_model.setData(nsigs_index, nsigs)
self.iterateOverModel(updateFunctionCaption)
if combo_box is not None:
self.orig_poly_index = combo_box.currentIndex()
[docs] def loadPolydispArray(self, row_index):
"""
Show the load file dialog and loads requested data into state
"""
datafile = QtWidgets.QFileDialog.getOpenFileName(
self, "Choose a weight file", "", "All files (*.*)", None,
QtWidgets.QFileDialog.DontUseNativeDialog)[0]
if not datafile:
logger.info("No weight data chosen.")
raise IOError
values = []
weights = []
def appendData(data_tuple):
"""
Fish out floats from a tuple of strings
"""
try:
values.append(float(data_tuple[0]))
weights.append(float(data_tuple[1]))
except (ValueError, IndexError):
# just pass through if line with bad data
return
with open(datafile, 'r') as column_file:
column_data = [line.rstrip().split() for line in column_file.readlines()]
[appendData(line) for line in column_data]
# If everything went well - update the sasmodel values
self.disp_model.set_weights(np.array(values), np.array(weights))
# + update the cell with filename
fname = os.path.basename(str(datafile))
fname_index = self._poly_model.index(row_index, self.lstPoly.itemDelegate().poly_filename)
self._poly_model.setData(fname_index, fname)
[docs] def onColumnWidthUpdate(self, index, old_size, new_size):
"""
Simple state update of the current column widths in the param list
"""
self.lstParamHeaderSizes[index] = new_size
[docs] def setMagneticModel(self):
"""
Set magnetism values on model
"""
if not self.model_parameters:
return
self._magnet_model.clear()
# default initial value
m0 = 0.5
for param in self.model_parameters.call_parameters:
if param.type != 'magnetic': continue
if "M0" in param.name:
m0 += 0.5
value = m0
else:
value = param.default
self.addCheckedMagneticListToModel(param, value)
FittingUtilities.addHeadersToModel(self._magnet_model)
[docs] def shellNamesList(self):
"""
Returns list of names of all multi-shell parameters
E.g. for sld[n], radius[n], n=1..3 it will return
[sld1, sld2, sld3, radius1, radius2, radius3]
"""
multi_names = [p.name[:p.name.index('[')] for p in self.model_parameters.iq_parameters if '[' in p.name]
top_index = self.kernel_module.multiplicity_info.number
shell_names = []
for i in range(1, top_index+1):
for name in multi_names:
shell_names.append(name+str(i))
return shell_names
[docs] def addCheckedMagneticListToModel(self, param, value):
"""
Wrapper for model update with a subset of magnetic parameters
"""
try:
basename, _ = param.name.rsplit('_', 1)
except ValueError:
basename = param.name
if basename in self.shell_names:
try:
shell_index = int(basename[-2:])
except ValueError:
shell_index = int(basename[-1:])
if shell_index > self.current_shell_displayed:
return
checked_list = [param.name,
str(value),
str(param.limits[0]),
str(param.limits[1]),
param.units]
self.magnet_params[param.name] = value
FittingUtilities.addCheckedListToModel(self._magnet_model, checked_list)
[docs] def enableStructureFactorControl(self, structure_factor):
"""
Add structure factors to the list of parameters
"""
if self.kernel_module.is_form_factor or structure_factor == 'None':
self.enableStructureCombo()
else:
self.disableStructureCombo()
[docs] def addExtraShells(self):
"""
Add a combobox for multiple shell display
"""
param_name, param_length = FittingUtilities.getMultiplicity(self.model_parameters)
if param_length == 0:
return
# cell 1: variable name
item1 = QtGui.QStandardItem(param_name)
func = QtWidgets.QComboBox()
# cell 2: combobox
item2 = QtGui.QStandardItem()
# cell 3: min value
item3 = QtGui.QStandardItem()
# set the cell to be non-editable
item3.setFlags(item3.flags() ^ QtCore.Qt.ItemIsEditable)
# cell 4: max value
item4 = QtGui.QStandardItem()
# set the cell to be non-editable
item4.setFlags(item4.flags() ^ QtCore.Qt.ItemIsEditable)
# cell 4: SLD button
item5 = QtGui.QStandardItem()
button = QtWidgets.QPushButton()
button.setText("Show SLD Profile")
self._model_model.appendRow([item1, item2, item3, item4, item5])
# Beautify the row: span columns 2-4
shell_row = self._model_model.rowCount()
shell_index = self._model_model.index(shell_row-1, 1)
button_index = self._model_model.index(shell_row-1, 4)
self.lstParams.setIndexWidget(shell_index, func)
self.lstParams.setIndexWidget(button_index, button)
self._n_shells_row = shell_row - 1
# Get the default number of shells for the model
kernel_pars = self.kernel_module._model_info.parameters.kernel_parameters
shell_par = None
for par in kernel_pars:
parname = par.name
if '[' in parname:
parname = parname[:parname.index('[')]
if parname == param_name:
shell_par = par
break
if shell_par is None:
logger.error("Could not find %s in kernel parameters.", param_name)
return
default_shell_count = shell_par.default
shell_min = 0
shell_max = 0
try:
shell_min = int(shell_par.limits[0])
shell_max = int(shell_par.limits[1])
except IndexError as ex:
# no info about limits
pass
except OverflowError:
# Try to limit shell_par, if possible
if float(shell_par.limits[1])==np.inf:
shell_max = 9
logging.warning("Limiting shell count to 9.")
except Exception as ex:
logging.error("Badly defined multiplicity: "+ str(ex))
return
# don't update the kernel here - this data is display only
self._model_model.blockSignals(True)
item3.setText(str(shell_min))
item4.setText(str(shell_max))
self._model_model.blockSignals(False)
## Respond to index change
#func.currentTextChanged.connect(self.modifyShellsInList)
# Respond to button press
button.clicked.connect(self.onShowSLDProfile)
# Available range of shells displayed in the combobox
func.addItems([str(i) for i in range(shell_min, shell_max+1)])
# Respond to index change
func.currentTextChanged.connect(self.modifyShellsInList)
# Add default number of shells to the model
func.setCurrentText(str(default_shell_count))
self.modifyShellsInList(str(default_shell_count))
[docs] def modifyShellsInList(self, text):
"""
Add/remove additional multishell parameters
"""
# Find row location of the combobox
first_row = self._n_shells_row + 1
remove_rows = self._num_shell_params
try:
index = int(text)
except ValueError:
# bad text on the control!
index = 0
logger.error("Multiplicity incorrect! Setting to 0")
self.kernel_module.multiplicity = index
if remove_rows > 1:
self._model_model.removeRows(first_row, remove_rows)
new_rows = FittingUtilities.addShellsToModel(
self.model_parameters,
self._model_model,
index,
first_row,
self.lstParams)
self._num_shell_params = len(new_rows)
self.current_shell_displayed = index
# Param values for existing shells were reset to default; force all changes into kernel module
for row in new_rows:
par = row[0].text()
val = GuiUtils.toDouble(row[1].text())
self.kernel_module.setParam(par, val)
# Change 'n' in the parameter model; also causes recalculation
self._model_model.item(self._n_shells_row, 1).setText(str(index))
# Update relevant models
self.setPolyModel()
if self.canHaveMagnetism():
self.setMagneticModel()
[docs] def onShowSLDProfile(self):
"""
Show a quick plot of SLD profile
"""
# get profile data
try:
x, y = self.kernel_module.getProfile()
except TypeError:
msg = "SLD profile calculation failed."
logging.error(msg)
return
y *= 1.0e6
profile_data = Data1D(x=x, y=y)
profile_data.name = "SLD"
profile_data.scale = 'linear'
profile_data.symbol = 'Line'
profile_data.hide_error = True
profile_data._xaxis = "R"
profile_data._xunit = "\AA"
profile_data._yaxis = "SLD"
profile_data._yunit = "10^{-6}\AA^{-2}"
profile_data.ytransform='y'
profile_data.xtransform='x'
profile_data.id = "sld"
plotter = PlotterWidget(self, quickplot=True)
plotter.showLegend = False
plotter.plot(data=profile_data, hide_error=True, marker='-')
self.plot_widget = QtWidgets.QWidget()
self.plot_widget.setWindowTitle("Scattering Length Density Profile")
layout = QtWidgets.QVBoxLayout()
layout.addWidget(plotter)
self.plot_widget.setLayout(layout)
self.plot_widget.show()
[docs] def setInteractiveElements(self, enabled=True):
"""
Switch interactive GUI elements on/off
"""
assert isinstance(enabled, bool)
self.lstParams.setEnabled(enabled)
self.lstPoly.setEnabled(enabled)
self.lstMagnetic.setEnabled(enabled)
self.cbCategory.setEnabled(enabled)
if enabled:
# worry about original enablement of model and SF
self.cbModel.setEnabled(self.enabled_cbmodel)
self.cbStructureFactor.setEnabled(self.enabled_sfmodel)
else:
self.cbModel.setEnabled(enabled)
self.cbStructureFactor.setEnabled(enabled)
self.cmdPlot.setEnabled(enabled)
[docs] def enableInteractiveElements(self):
"""
Set buttion caption on fitting/calculate finish
Enable the param table(s)
"""
# Notify the user that fitting is available
self.cmdFit.setStyleSheet('QPushButton {color: black;}')
self.cmdFit.setText("Fit")
self.fit_started = False
self.setInteractiveElements(True)
[docs] def disableInteractiveElements(self):
"""
Set buttion caption on fitting/calculate start
Disable the param table(s)
"""
# Notify the user that fitting is being run
# Allow for stopping the job
self.cmdFit.setStyleSheet('QPushButton {color: red;}')
self.cmdFit.setText('Stop fit')
self.setInteractiveElements(False)
[docs] def disableInteractiveElementsOnCalculate(self):
"""
Set buttion caption on fitting/calculate start
Disable the param table(s)
"""
# Notify the user that fitting is being run
# Allow for stopping the job
self.cmdFit.setStyleSheet('QPushButton {color: red;}')
self.cmdFit.setText('Running...')
self.setInteractiveElements(False)
[docs] def readFitPage(self, fp):
"""
Read in state from a fitpage object and update GUI
"""
assert isinstance(fp, FitPage)
# Main tab info
self.logic.data.filename = fp.filename
self.data_is_loaded = fp.data_is_loaded
self.chkPolydispersity.setCheckState(fp.is_polydisperse)
self.chkMagnetism.setCheckState(fp.is_magnetic)
self.chk2DView.setCheckState(fp.is2D)
# Update the comboboxes
self.cbCategory.setCurrentIndex(self.cbCategory.findText(fp.current_category))
self.cbModel.setCurrentIndex(self.cbModel.findText(fp.current_model))
if fp.current_factor:
self.cbStructureFactor.setCurrentIndex(self.cbStructureFactor.findText(fp.current_factor))
self.chi2 = fp.chi2
# Options tab
self.q_range_min = fp.fit_options[fp.MIN_RANGE]
self.q_range_max = fp.fit_options[fp.MAX_RANGE]
self.npts = fp.fit_options[fp.NPTS]
self.log_points = fp.fit_options[fp.LOG_POINTS]
self.weighting = fp.fit_options[fp.WEIGHTING]
# Models
self._model_model = fp.model_model
self._poly_model = fp.poly_model
self._magnet_model = fp.magnetism_model
# Resolution tab
smearing = fp.smearing_options[fp.SMEARING_OPTION]
accuracy = fp.smearing_options[fp.SMEARING_ACCURACY]
smearing_min = fp.smearing_options[fp.SMEARING_MIN]
smearing_max = fp.smearing_options[fp.SMEARING_MAX]
self.smearing_widget.setState(smearing, accuracy, smearing_min, smearing_max)
# TODO: add polidyspersity and magnetism
[docs] def saveToFitPage(self, fp):
"""
Write current state to the given fitpage
"""
assert isinstance(fp, FitPage)
# Main tab info
fp.filename = self.logic.data.filename
fp.data_is_loaded = self.data_is_loaded
fp.is_polydisperse = self.chkPolydispersity.isChecked()
fp.is_magnetic = self.chkMagnetism.isChecked()
fp.is2D = self.chk2DView.isChecked()
fp.data = self.data
# Use current models - they contain all the required parameters
fp.model_model = self._model_model
fp.poly_model = self._poly_model
fp.magnetism_model = self._magnet_model
if self.cbCategory.currentIndex() != 0:
fp.current_category = str(self.cbCategory.currentText())
fp.current_model = str(self.cbModel.currentText())
if self.cbStructureFactor.isEnabled() and self.cbStructureFactor.currentIndex() != 0:
fp.current_factor = str(self.cbStructureFactor.currentText())
else:
fp.current_factor = ''
fp.chi2 = self.chi2
fp.main_params_to_fit = self.main_params_to_fit
fp.poly_params_to_fit = self.poly_params_to_fit
fp.magnet_params_to_fit = self.magnet_params_to_fit
fp.kernel_module = self.kernel_module
# Algorithm options
# fp.algorithm = self.parent.fit_options.selected_id
# Options tab
fp.fit_options[fp.MIN_RANGE] = self.q_range_min
fp.fit_options[fp.MAX_RANGE] = self.q_range_max
fp.fit_options[fp.NPTS] = self.npts
#fp.fit_options[fp.NPTS_FIT] = self.npts_fit
fp.fit_options[fp.LOG_POINTS] = self.log_points
fp.fit_options[fp.WEIGHTING] = self.weighting
# Resolution tab
smearing, accuracy, smearing_min, smearing_max = self.smearing_widget.state()
fp.smearing_options[fp.SMEARING_OPTION] = smearing
fp.smearing_options[fp.SMEARING_ACCURACY] = accuracy
fp.smearing_options[fp.SMEARING_MIN] = smearing_min
fp.smearing_options[fp.SMEARING_MAX] = smearing_max
# TODO: add polidyspersity and magnetism
[docs] def updateUndo(self):
"""
Create a new state page and add it to the stack
"""
if self.undo_supported:
self.pushFitPage(self.currentState())
[docs] def currentState(self):
"""
Return fit page with current state
"""
new_page = FitPage()
self.saveToFitPage(new_page)
return new_page
[docs] def pushFitPage(self, new_page):
"""
Add a new fit page object with current state
"""
self.page_stack.append(new_page)
[docs] def popFitPage(self):
"""
Remove top fit page from stack
"""
if self.page_stack:
self.page_stack.pop()
[docs] def getReport(self):
"""
Create and return HTML report with parameters and charts
"""
index = None
if self.all_data:
index = self.all_data[self.data_index]
else:
index = self.theory_item
params = FittingUtilities.getStandardParam(self._model_model)
poly_params = []
magnet_params = []
if self.chkPolydispersity.isChecked() and self._poly_model.rowCount() > 0:
poly_params = FittingUtilities.getStandardParam(self._poly_model)
if self.chkMagnetism.isChecked() and self.canHaveMagnetism() and self._magnet_model.rowCount() > 0:
magnet_params = FittingUtilities.getStandardParam(self._magnet_model)
report_logic = ReportPageLogic(self,
kernel_module=self.kernel_module,
data=self.data,
index=index,
params=params+poly_params+magnet_params)
return report_logic.reportList()
[docs] def loadPageStateCallback(self,state=None, datainfo=None, format=None):
"""
This is a callback method called from the CANSAS reader.
We need the instance of this reader only for writing out a file,
so there's nothing here.
Until Load Analysis is implemented, that is.
"""
pass
[docs] def loadPageState(self, pagestate=None):
"""
Load the PageState object and update the current widget
"""
filepath = self.loadAnalysisFile()
if filepath is None or filepath == "":
return
with open(filepath, 'r') as statefile:
#column_data = [line.rstrip().split() for line in statefile.readlines()]
lines = statefile.readlines()
# convert into list of lists
pass
[docs] def loadAnalysisFile(self):
"""
Called when the "Open Project" menu item chosen.
"""
default_name = "FitPage"+str(self.tab_id)+".fitv"
wildcard = "fitv files (*.fitv)"
kwargs = {
'caption' : 'Open Analysis',
'directory' : default_name,
'filter' : wildcard,
'parent' : self,
}
filename = QtWidgets.QFileDialog.getOpenFileName(**kwargs)[0]
return filename
[docs] def onCopyToClipboard(self, format=None):
"""
Copy current fitting parameters into the clipboard
using requested formatting:
plain, excel, latex
"""
param_list = self.getFitParameters()
if format=="":
param_list = self.getFitPage()
param_list += self.getFitModel()
formatted_output = FittingUtilities.formatParameters(param_list)
elif format == "Excel":
formatted_output = FittingUtilities.formatParametersExcel(param_list[1:])
elif format == "Latex":
formatted_output = FittingUtilities.formatParametersLatex(param_list[1:])
elif format == "Save":
Text_output = FittingUtilities.formatParameters(param_list, False)
Excel_output = FittingUtilities.formatParametersExcel(param_list[1:])
Latex_output = FittingUtilities.formatParametersLatex(param_list[1:])
else:
raise AttributeError("Bad parameter output format specifier.")
# Dump formatted_output to the clipboard
if format == "Save":
save_dialog = QtWidgets.QFileDialog()
save_dialog.setAcceptMode(QtWidgets.QFileDialog.AcceptSave)
kwargs = {
'parent': self,
'caption': 'Save Project',
'filter': 'Text (*.txt);;Excel (*.xls);;Latex (*.log)',
'options': QtWidgets.QFileDialog.DontUseNativeDialog
}
file_path = save_dialog.getSaveFileName(**kwargs)
filename = file_path[0]
if file_path[1] == 'Text (*.txt)':
Type_output = Text_output
filename = '.'.join((filename, 'txt'))
elif file_path[1] == 'Excel (*.xls)':
Type_output = Excel_output
filename = '.'.join((filename, 'xls'))
elif file_path[1] == 'Latex (*.log)':
Type_output = Latex_output
filename = '.'.join((filename, 'log'))
file_open = open(filename, 'w')
with file_open:
file_open.write(Type_output)
else:
cb = QtWidgets.QApplication.clipboard()
cb.setText(formatted_output)
[docs] def getFitModel(self):
"""
serializes combobox state
"""
param_list = []
model = str(self.cbModel.currentText())
category = str(self.cbCategory.currentText())
structure = str(self.cbStructureFactor.currentText())
param_list.append(['fitpage_category', category])
param_list.append(['fitpage_model', model])
param_list.append(['fitpage_structure', structure])
return param_list
[docs] def getFitPage(self):
"""
serializes full state of this fit page
"""
# run a loop over all parameters and pull out
# first - regular params
param_list = self.getFitParameters()
param_list.append(['is_data', str(self.data_is_loaded)])
data_ids = []
filenames = []
if self.is_batch_fitting:
for item in self.all_data:
# need item->data->data_id
data = GuiUtils.dataFromItem(item)
data_ids.append(data.id)
filenames.append(data.filename)
else:
if self.data_is_loaded:
data_ids = [str(self.logic.data.id)]
filenames = [str(self.logic.data.filename)]
param_list.append(['tab_index', str(self.tab_id)])
param_list.append(['is_batch_fitting', str(self.is_batch_fitting)])
param_list.append(['data_name', filenames])
param_list.append(['data_id', data_ids])
param_list.append(['tab_name', self.modelName()])
# option tab
param_list.append(['q_range_min', str(self.q_range_min)])
param_list.append(['q_range_max', str(self.q_range_max)])
param_list.append(['q_weighting', str(self.weighting)])
param_list.append(['weighting', str(self.options_widget.weighting)])
# resolution
smearing, accuracy, smearing_min, smearing_max = self.smearing_widget.state()
index = self.smearing_widget.cbSmearing.currentIndex()
param_list.append(['smearing', str(index)])
param_list.append(['smearing_min', str(smearing_min)])
param_list.append(['smearing_max', str(smearing_max)])
# checkboxes, if required
has_polydisp = self.chkPolydispersity.isChecked()
has_magnetism = self.chkMagnetism.isChecked()
has_chain = self.chkChainFit.isChecked()
has_2D = self.chk2DView.isChecked()
param_list.append(['polydisperse_params', str(has_polydisp)])
param_list.append(['magnetic_params', str(has_magnetism)])
param_list.append(['chainfit_params', str(has_chain)])
param_list.append(['2D_params', str(has_2D)])
return param_list
[docs] def getFitParameters(self):
"""
serializes current parameters
"""
param_list = []
if self.kernel_module is None:
return param_list
param_list.append(['model_name', str(self.cbModel.currentText())])
def gatherParams(row):
"""
Create list of main parameters based on _model_model
"""
param_name = str(self._model_model.item(row, 0).text())
# Assure this is a parameter - must contain a checkbox
if not self._model_model.item(row, 0).isCheckable():
# maybe it is a combobox item (multiplicity)
try:
index = self._model_model.index(row, 1)
widget = self.lstParams.indexWidget(index)
if widget is None:
return
if isinstance(widget, QtWidgets.QComboBox):
# find the index of the combobox
current_index = widget.currentIndex()
param_list.append([param_name, 'None', str(current_index)])
except Exception as ex:
pass
return
param_checked = str(self._model_model.item(row, 0).checkState() == QtCore.Qt.Checked)
# Value of the parameter. In some cases this is the text of the combobox choice.
param_value = str(self._model_model.item(row, 1).text())
param_error = None
param_min = None
param_max = None
column_offset = 0
if self.has_error_column:
column_offset = 1
param_error = str(self._model_model.item(row, 1+column_offset).text())
try:
param_min = str(self._model_model.item(row, 2+column_offset).text())
param_max = str(self._model_model.item(row, 3+column_offset).text())
except:
pass
# Do we have any constraints on this parameter?
constraint = self.getConstraintForRow(row)
cons = ()
if constraint is not None:
value = constraint.value
func = constraint.func
value_ex = constraint.value_ex
param = constraint.param
validate = constraint.validate
cons = (value, param, value_ex, validate, func)
param_list.append([param_name, param_checked, param_value,param_error, param_min, param_max, cons])
def gatherPolyParams(row):
"""
Create list of polydisperse parameters based on _poly_model
"""
param_name = str(self._poly_model.item(row, 0).text()).split()[-1]
param_checked = str(self._poly_model.item(row, 0).checkState() == QtCore.Qt.Checked)
param_value = str(self._poly_model.item(row, 1).text())
param_error = None
column_offset = 0
if self.has_poly_error_column:
column_offset = 1
param_error = str(self._poly_model.item(row, 1+column_offset).text())
param_min = str(self._poly_model.item(row, 2+column_offset).text())
param_max = str(self._poly_model.item(row, 3+column_offset).text())
param_npts = str(self._poly_model.item(row, 4+column_offset).text())
param_nsigs = str(self._poly_model.item(row, 5+column_offset).text())
param_fun = str(self._poly_model.item(row, 6+column_offset).text()).rstrip()
index = self._poly_model.index(row, 6+column_offset)
widget = self.lstPoly.indexWidget(index)
if widget is not None and isinstance(widget, QtWidgets.QComboBox):
param_fun = widget.currentText()
# width
name = param_name+".width"
param_list.append([name, param_checked, param_value, param_error,
param_min, param_max, param_npts, param_nsigs, param_fun])
def gatherMagnetParams(row):
"""
Create list of magnetic parameters based on _magnet_model
"""
param_name = str(self._magnet_model.item(row, 0).text())
param_checked = str(self._magnet_model.item(row, 0).checkState() == QtCore.Qt.Checked)
param_value = str(self._magnet_model.item(row, 1).text())
param_error = None
column_offset = 0
if self.has_magnet_error_column:
column_offset = 1
param_error = str(self._magnet_model.item(row, 1+column_offset).text())
param_min = str(self._magnet_model.item(row, 2+column_offset).text())
param_max = str(self._magnet_model.item(row, 3+column_offset).text())
param_list.append([param_name, param_checked, param_value,
param_error, param_min, param_max])
self.iterateOverModel(gatherParams)
if self.chkPolydispersity.isChecked():
self.iterateOverPolyModel(gatherPolyParams)
if self.chkMagnetism.isChecked() and self.canHaveMagnetism():
self.iterateOverMagnetModel(gatherMagnetParams)
if self.kernel_module.is_multiplicity_model:
param_list.append(['multiplicity', str(self.kernel_module.multiplicity)])
return param_list
[docs] def onParameterPaste(self):
"""
Use the clipboard to update fit state
"""
# Check if the clipboard contains right stuff
cb = QtWidgets.QApplication.clipboard()
cb_text = cb.text()
lines = cb_text.split(':')
if lines[0] != 'sasview_parameter_values':
return False
# put the text into dictionary
line_dict = {}
for line in lines[1:]:
content = line.split(',')
if len(content) > 1:
line_dict[content[0]] = content[1:]
self.updatePageWithParameters(line_dict)
[docs] def createPageForParameters(self, line_dict):
"""
Sets up page with requested model/str factor
and fills it up with sent parameters
"""
if 'fitpage_category' in line_dict:
self.cbCategory.setCurrentIndex(self.cbCategory.findText(line_dict['fitpage_category'][0]))
if 'fitpage_model' in line_dict:
self.cbModel.setCurrentIndex(self.cbModel.findText(line_dict['fitpage_model'][0]))
if 'fitpage_structure' in line_dict:
self.cbStructureFactor.setCurrentIndex(self.cbStructureFactor.findText(line_dict['fitpage_structure'][0]))
# Now that the page is ready for parameters, fill it up
self.updatePageWithParameters(line_dict)
[docs] def updatePageWithParameters(self, line_dict):
"""
Update FitPage with parameters in line_dict
"""
if 'model_name' not in line_dict.keys():
return
model = line_dict['model_name'][0]
context = {}
if 'multiplicity' in line_dict.keys():
multip = int(line_dict['multiplicity'][0], 0)
# reset the model with multiplicity, so further updates are saved
if self.kernel_module.is_multiplicity_model:
self.kernel_module.multiplicity=multip
self.updateMultiplicityCombo(multip)
if 'tab_name' in line_dict.keys() and self.kernel_module is not None:
self.kernel_module.name = line_dict['tab_name'][0]
if 'polydisperse_params' in line_dict.keys():
self.chkPolydispersity.setChecked(line_dict['polydisperse_params'][0]=='True')
if 'magnetic_params' in line_dict.keys():
self.chkMagnetism.setChecked(line_dict['magnetic_params'][0]=='True')
if 'chainfit_params' in line_dict.keys():
self.chkChainFit.setChecked(line_dict['chainfit_params'][0]=='True')
if '2D_params' in line_dict.keys():
self.chk2DView.setChecked(line_dict['2D_params'][0]=='True')
# Create the context dictionary for parameters
context['model_name'] = model
for key, value in line_dict.items():
if len(value) > 2:
context[key] = value
if str(self.cbModel.currentText()) != str(context['model_name']):
msg = QtWidgets.QMessageBox()
msg.setIcon(QtWidgets.QMessageBox.Information)
msg.setText("The model in the clipboard is not the same as the currently loaded model. \
Not all parameters saved may paste correctly.")
msg.setStandardButtons(QtWidgets.QMessageBox.Ok | QtWidgets.QMessageBox.Cancel)
result = msg.exec_()
if result == QtWidgets.QMessageBox.Ok:
pass
else:
return
if 'smearing' in line_dict.keys():
try:
index = int(line_dict['smearing'][0])
self.smearing_widget.cbSmearing.setCurrentIndex(index)
except ValueError:
pass
if 'smearing_min' in line_dict.keys():
try:
self.smearing_widget.dq_l = float(line_dict['smearing_min'][0])
except ValueError:
pass
if 'smearing_max' in line_dict.keys():
try:
self.smearing_widget.dq_r = float(line_dict['smearing_max'][0])
except ValueError:
pass
if 'q_range_max' in line_dict.keys():
try:
self.q_range_min = float(line_dict['q_range_min'][0])
self.q_range_max = float(line_dict['q_range_max'][0])
except ValueError:
pass
self.options_widget.updateQRange(self.q_range_min, self.q_range_max, self.npts)
try:
button_id = int(line_dict['weighting'][0])
for button in self.options_widget.weightingGroup.buttons():
if abs(self.options_widget.weightingGroup.id(button)) == button_id+2:
button.setChecked(True)
break
except ValueError:
pass
self.updateFullModel(context)
self.updateFullPolyModel(context)
self.updateFullMagnetModel(context)
[docs] def updateMultiplicityCombo(self, multip):
"""
Find and update the multiplicity combobox
"""
index = self._model_model.index(self._n_shells_row, 1)
widget = self.lstParams.indexWidget(index)
if widget is not None and isinstance(widget, QtWidgets.QComboBox):
widget.setCurrentIndex(widget.findText(str(multip)))
self.current_shell_displayed = multip
[docs] def updateFullModel(self, param_dict):
"""
Update the model with new parameters
"""
assert isinstance(param_dict, dict)
if not dict:
return
def updateFittedValues(row):
# Utility function for main model update
# internal so can use closure for param_dict
param_name = str(self._model_model.item(row, 0).text())
if param_name not in list(param_dict.keys()):
return
# Special case of combo box in the cell (multiplicity)
param_line = param_dict[param_name]
if len(param_line) == 1:
# modify the shells value
try:
combo_index = int(param_line[0])
except ValueError:
# quietly pass
return
index = self._model_model.index(row, 1)
widget = self.lstParams.indexWidget(index)
if widget is not None and isinstance(widget, QtWidgets.QComboBox):
#widget.setCurrentIndex(combo_index)
return
# checkbox state
param_checked = QtCore.Qt.Checked if param_dict[param_name][0] == "True" else QtCore.Qt.Unchecked
self._model_model.item(row, 0).setCheckState(param_checked)
# parameter value can be either just a value or text on the combobox
param_text = param_dict[param_name][1]
index = self._model_model.index(row, 1)
widget = self.lstParams.indexWidget(index)
if widget is not None and isinstance(widget, QtWidgets.QComboBox):
# Find the right index based on text
combo_index = int(param_text, 0)
widget.setCurrentIndex(combo_index)
else:
# modify the param value
param_repr = GuiUtils.formatNumber(param_text, high=True)
self._model_model.item(row, 1).setText(param_repr)
# Potentially the error column
ioffset = 0
joffset = 0
if len(param_dict[param_name])>5:
# error values are not editable - no need to update
ioffset = 1
if self.has_error_column:
joffset = 1
# min/max
try:
self._model_model.item(row, 2+joffset).setText(param_dict[param_name][2+ioffset])
self._model_model.item(row, 3+joffset).setText(param_dict[param_name][3+ioffset])
except:
pass
# constraints
cons = param_dict[param_name][4+ioffset]
if cons is not None and len(cons)==5:
value = cons[0]
param = cons[1]
value_ex = cons[2]
validate = cons[3]
function = cons[4]
constraint = Constraint()
constraint.value = value
constraint.func = function
constraint.param = param
constraint.value_ex = value_ex
constraint.validate = validate
self.addConstraintToRow(constraint=constraint, row=row)
self.setFocus()
self.iterateOverModel(updateFittedValues)
[docs] def updateFullPolyModel(self, param_dict):
"""
Update the polydispersity model with new parameters, create the errors column
"""
assert isinstance(param_dict, dict)
if not dict:
return
def updateFittedValues(row):
# Utility function for main model update
# internal so can use closure for param_dict
if row >= self._poly_model.rowCount():
return
param_name = str(self._poly_model.item(row, 0).text()).rsplit()[-1] + '.width'
if param_name not in list(param_dict.keys()):
return
# checkbox state
param_checked = QtCore.Qt.Checked if param_dict[param_name][0] == "True" else QtCore.Qt.Unchecked
self._poly_model.item(row,0).setCheckState(param_checked)
# modify the param value
param_repr = GuiUtils.formatNumber(param_dict[param_name][1], high=True)
self._poly_model.item(row, 1).setText(param_repr)
# Potentially the error column
ioffset = 0
joffset = 0
if len(param_dict[param_name])>7:
ioffset = 1
if self.has_poly_error_column:
joffset = 1
# min
param_repr = GuiUtils.formatNumber(param_dict[param_name][2+ioffset], high=True)
self._poly_model.item(row, 2+joffset).setText(param_repr)
# max
param_repr = GuiUtils.formatNumber(param_dict[param_name][3+ioffset], high=True)
self._poly_model.item(row, 3+joffset).setText(param_repr)
# Npts
param_repr = GuiUtils.formatNumber(param_dict[param_name][4+ioffset], high=True)
self._poly_model.item(row, 4+joffset).setText(param_repr)
# Nsigs
param_repr = GuiUtils.formatNumber(param_dict[param_name][5+ioffset], high=True)
self._poly_model.item(row, 5+joffset).setText(param_repr)
self.setFocus()
self.iterateOverPolyModel(updateFittedValues)
[docs] def updateFullMagnetModel(self, param_dict):
"""
Update the magnetism model with new parameters, create the errors column
"""
assert isinstance(param_dict, dict)
if not dict:
return
def updateFittedValues(row):
# Utility function for main model update
# internal so can use closure for param_dict
if row >= self._magnet_model.rowCount():
return
param_name = str(self._magnet_model.item(row, 0).text()).rsplit()[-1]
if param_name not in list(param_dict.keys()):
return
# checkbox state
param_checked = QtCore.Qt.Checked if param_dict[param_name][0] == "True" else QtCore.Qt.Unchecked
self._magnet_model.item(row,0).setCheckState(param_checked)
# modify the param value
param_repr = GuiUtils.formatNumber(param_dict[param_name][1], high=True)
self._magnet_model.item(row, 1).setText(param_repr)
# Potentially the error column
ioffset = 0
joffset = 0
if len(param_dict[param_name])>4:
ioffset = 1
if self.has_magnet_error_column:
joffset = 1
# min
param_repr = GuiUtils.formatNumber(param_dict[param_name][2+ioffset], high=True)
self._magnet_model.item(row, 2+joffset).setText(param_repr)
# max
param_repr = GuiUtils.formatNumber(param_dict[param_name][3+ioffset], high=True)
self._magnet_model.item(row, 3+joffset).setText(param_repr)
self.iterateOverMagnetModel(updateFittedValues)
[docs] def onMaskedData(self):
"""
A mask has been applied to current data.
Update the Q ranges.
"""
self.updateQRange()
self.updateData()
[docs] def getCurrentFitState(self, state=None):
"""
Store current state for fit_page
"""
# Comboboxes
state.categorycombobox = self.cbCategory.currentText()
state.formfactorcombobox = self.cbModel.currentText()
if self.cbStructureFactor.isEnabled():
state.structurecombobox = self.cbStructureFactor.currentText()
state.tcChi = self.chi2
state.enable2D = self.is2D
# save data
state.data = copy.deepcopy(self.data)
# save plotting range
state.qmin = self.q_range_min
state.qmax = self.q_range_max
state.npts = self.npts
p = self.model_parameters
# save checkbutton state and txtcrtl values
state.parameters = FittingUtilities.getStandardParam(self._model_model)
state.orientation_params_disp = FittingUtilities.getOrientationParam(self.kernel_module)