Source code for PyMca5.tests.GefitTest

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__author__ = "V. Armando Sole - ESRF Data Analysis"
__contact__ = "sole@esrf.fr"
__license__ = "MIT"
__copyright__ = "European Synchrotron Radiation Facility, Grenoble, France"
import unittest
import os
import numpy

[docs]class testGefit(unittest.TestCase):
[docs] def setUp(self): """ import the module """ try: from PyMca5.PyMcaMath.fitting import Gefit self.gefit = Gefit except: self.gefit = None
[docs] def gaussianPlusLinearBackground(self, param, t): dummy = 2.3548200450309493 * (t - param[3])/ param[4] return param[0] + param[1] * t +\ param[2] * numpy.exp(-0.5 * dummy * dummy)
[docs] def testGefitImport(self): self.assertTrue(self.gefit is not None)
[docs] def testGefitLeastSquares(self): self.testGefitImport() x = numpy.arange(500.) originalParameters = numpy.array([10.5, 2, 1000.0, 200., 100], numpy.float) fitFunction = self.gaussianPlusLinearBackground y = fitFunction(originalParameters, x) startingParameters = [0.0 ,1.0,900.0, 150., 90] fittedpar, chisq, sigmapar =self.gefit.LeastSquaresFit(fitFunction, startingParameters, xdata=x, ydata=y, sigmadata=None) for i in range(len(originalParameters)): self.assertTrue(abs(fittedpar[i] - originalParameters[i]) < 0.01)
[docs]def getSuite(auto=True): testSuite = unittest.TestSuite() if auto: testSuite.addTest(\ unittest.TestLoader().loadTestsFromTestCase(testGefit)) else: # use a predefined order testSuite.addTest(testGefit("testGefitImport")) testSuite.addTest(testGefit("testGefitLeastSquares")) return testSuite
[docs]def test(auto=False): unittest.TextTestRunner(verbosity=2).run(getSuite(auto=auto))
if __name__ == '__main__': test()