Source code for sas.perspectives.fitting.plugin_models.polynomial5
"""
Test plug-in model
These are links of available functions:
http://docs.python.org/library/math.html
http://www.scipy.org/Numpy_Functions_by_Category
"""
"""
## *****************************************************************************
Please select the 'Compile' from the menubar after the modification and saving.
Note that we recommend to save the file as a different file name.
Otherwise, it could be removed in the future on re-installation of the SasView.
## *****************************************************************************
"""
from sas.models.pluginmodel import Model1DPlugin ##DO NOT CHANGE THIS LINE!!!
## FOR MORE INFORMATION CHECK http://docs.python.org/library/math.html
## AND http://www.scipy.org/Numpy_Functions_by_Category
import math ##DO NOT CHANGE THIS LINE!!!
import numpy ##DO NOT CHANGE THIS LINE!!!
import os
import sys
## <----- SIGN DEFINES WHERE YOU CAN MODIFY THE CODE
[docs]class Model(Model1DPlugin): ##DO NOT CHANGE THIS LINE!!!
"""
##YOU CAN BE MODIFY ANYTHING BETWEEN """ """
##DESCRIPTION OF MODEL PLUG-IN GOES HERE
##EXAMPLE: Class that evaluates a polynomial model.
"""
name = ""
def __init__(self): ##DO NOT CHANGE THIS LINE!!!
"""
Initialization
"""
Model1DPlugin.__init__(self, name=self.name) ##DO NOT CHANGE THIS LINE!!!
## HERE WE DEFINE THE PARAM NAME AND ITS INITIAL VALUE
## YOU CAN MODIFY THE LINE BELLOW.CHANGE WORD BETWEEN ' ' AND NUMBER
self.params['A'] = 0.1 ## <-----
self.params['B'] = 10.0 ## <-----
self.params['C'] = 0.0 ## <-----
self.params['D'] = 0.0 ## <-----
self.params['E'] = 0.0 ## <-----
self.params['F'] = 0.0 ## <-----
# Set the name same as the file name
self.name = self.get_fname() ##DO NOT CHANGE THIS LINE!!!
## YOU CAN MODIFY THE LINE BELLOW.MODIFY WORDS BETWEEN """ """ ONLY!!!!
self.description = """
a + b * x + c * math.pow(x,2) + d * math.pow(x,3) \n
+ e * math.pow(x,4) + f * math.pow(x,5)
""" ## <-----
## DEFINE DEFAULT DETAILS
self.set_details() ##DO NOT DELETE OR CHANGE THIS LINE!!!
## IN THIS EXAMPLE THE FUNTION IS:
## F(x)=A+B*x+C*x^2+D*x^3+E*x^4+F*x^5
[docs] def function(self, x = 0.0): ##DO NOT CHANGE THIS LINE!!!
"""
Evaluate the model
:param x: input x
:return: function value
"""
## DEFINE YOUR FUNCTION HERE.
## YOU CAN ERASE EVERYTHING BELLOW FOR YOUR OWN FUNCTION
#Redefine parameters as local parameters, or skip and use long name
a = self.params['A'] ## <-----
b = self.params['B'] ## <-----
c = self.params['C'] ## <-----
d = self.params['D'] ## <-----
e = self.params['E'] ## <-----
f = self.params['F'] ## <-----
##THIS OUR FUNCTION TEMPLATE
poly = a + b * x + c * math.pow(x,2) + d * math.pow(x,3) \
+ e * math.pow(x,4) + f * math.pow(x,5) ## <-----
#(Just note: In Python, indentation defines the belongings
# of 'if', 'for', and so on..)
#(lim x --> 0)
if x == 0: ## <-----
result = a ## <-----
else: ## <-----
result = poly ## <-----
return result ## MODIFY ONLY RESULT. DON'T DELETE RETURN!!!!
## DO NOT MODIFY THE FOLLOWING LINES!!!!!!!!!!!!!!!!
[docs] def get_fname(self):
"""
Get the model name same as the file name
"""
path = sys._getframe().f_code.co_filename
basename = os.path.basename(path)
name, _ = os.path.splitext(basename)
return name
###############################################################################
## THIS IS FOR TEST. DO NOT MODIFY THE FOLLOWING LINES!!!!!!!!!!!!!!!!
if __name__ == "__main__":
m= Model()
out1 = m.runXY(0.0)
out2 = m.runXY(0.01)
isfine1 = numpy.isfinite(out1)
isfine2 = numpy.isfinite(out2)
print "Testing the value at Q = 0.0:"
print out1, " : finite? ", isfine1
print "Testing the value at Q = 0.01:"
print out2, " : finite? ", isfine2
if isfine1 and isfine2:
print "===> Simple Test: Passed!"
else:
print "===> Simple Test: Failed!"