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!"