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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Project: Fast Azimuthal Integration
# https://github.com/pyFAI/pyFAI
#
# Copyright (C) European Synchrotron Radiation Facility, Grenoble, France
#
# Principal author: Jérôme Kieffer (Jerome.Kieffer@ESRF.eu)
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
"""tests for Jon's geometry changes
FIXME : make some tests that the functions do what is expected
"""
import unittest, numpy, os, sys, time
from utilstest import UtilsTest, getLogger
logger = getLogger(__file__)
pyFAI = sys.modules["pyFAI"]
from pyFAI import geometry
from pyFAI import AzimuthalIntegrator
import fabio
class TestSolidAngle(unittest.TestCase):
"""
Test case for solid angle compared to Fit2D results
Masked region have values set to 0 (not negative) and native mask from pilatus desactivated
Detector Pilatus6M PixelSize= 1.720e-04, 1.720e-04 m
Wavelength= 1.072274e-10m
SampleDetDist= 1.994993e-01m PONI= 2.143248e-01, 2.133315e-01m rot1=0.007823 rot2= 0.006716 rot3= -0.000000 rad
DirectBeamDist= 199.510mm Center: x=1231.226, y=1253.864 pix Tilt=0.591 deg tiltPlanRotation= 139.352 deg
integration in 2theta between 0 and 56 deg in 1770 points
"""
fit2dFile = '2548/powder_200_2_0001.chi'
pilatusFile = '2549/powder_200_2_0001.cbf'
ai = None
fit2d = None
def setUp(self):
"""Download files"""
self.fit2dFile = UtilsTest.getimage(self.__class__.fit2dFile)
self.pilatusFile = UtilsTest.getimage(self.__class__.pilatusFile)
self.tth_fit2d, self.I_fit2d = numpy.loadtxt(self.fit2dFile, unpack=True)
self.ai = AzimuthalIntegrator(dist=1.994993e-01,
poni1=2.143248e-01,
poni2=2.133315e-01,
rot1=0.007823,
rot2=0.006716,
rot3=0,
pixel1=172e-6,
pixel2=172e-6)
self.data = fabio.open(self.pilatusFile).data
self.data[self.data < 0] = 0 #discard negative pixels
def testSolidAngle(self):
"""
This dataset goes up to 56deg, very good to test the solid angle correction
any error will show off.
fit2d makes correction in 1/cos^3(2th) (without tilt). pyFAI used to correct in 1/cos(2th)
"""
tth, I_nogood = self.ai.integrate1d(self.data, 1770, unit="2th_deg", radial_range=[0, 56], method="splitBBox", correctSolidAngle=False)
delta_tth = abs(tth - self.tth_fit2d).max()
delta_I = abs(I_nogood - self.I_fit2d).max()
I = abs(I_nogood - self.I_fit2d).mean()
self.assert_(delta_tth < 1e-5, 'Error on 2th position: %s <1e-5' % delta_tth)
self.assert_(delta_I > 100, 'Error on (wrong) I are large: %s >100' % delta_I)
self.assert_(I > 2, 'Error on (wrong) I are large: %s >2' % I)
tth, I_good = self.ai.integrate1d(self.data, 1770, unit="2th_deg", radial_range=[0, 56], method="splitBBox", correctSolidAngle=3)
delta_tth = abs(tth - self.tth_fit2d).max()
delta_I = abs(I_good - self.I_fit2d).max()
I = abs(I_good - self.I_fit2d).mean()
self.assert_(delta_tth < 1e-5, 'Error on 2th position: %s <1e-5' % delta_tth)
self.assert_(delta_I < 5, 'Error on (good) I are small: %s <5' % delta_I)
self.assert_(I < 0.05, 'Error on (good) I are small: %s <0.05' % I)
class TestBug88SolidAngle(unittest.TestCase):
"""
Test case for solid angle where data got modified inplace.
https://github.com/kif/pyFAI/issues/88
"""
def testSolidAngle(self):
img = numpy.ones((1000, 1000), dtype=numpy.float32)
ai = pyFAI.AzimuthalIntegrator(dist=0.01, detector="Titan", wavelength=1e-10)
t = ai.integrate1d(img, 1000, method="numpy")[1].max()
f = ai.integrate1d(img, 1000, method="numpy", correctSolidAngle=False)[1].max()
self.assertAlmostEqual(f, 1, 5, "uncorrected flat data are unchanged")
self.assertNotAlmostEqual(f, t, 1, "corrected and uncorrected flat data are different")
class ParameterisedTestCase(unittest.TestCase):
""" TestCase classes that want to be parameterised should
inherit from this class.
From Eli Bendersky's website
http://eli.thegreenplace.net/2011/08/02/python-unit-testing-parametrized-test-cases/
"""
def __init__(self, methodName='runTest', param=None):
super(ParameterisedTestCase, self).__init__(methodName)
self.param = param
@staticmethod
def parameterise(testcase_klass, param=None):
""" Create a suite containing all tests taken from the given
subclass, passing them the parameter 'param'.
"""
testloader = unittest.TestLoader()
testnames = testloader.getTestCaseNames(testcase_klass)
suite = unittest.TestSuite()
for name in testnames:
suite.addTest(testcase_klass(name, param=param))
return suite
class TestGeometry(ParameterisedTestCase):
def testGeometryFunctions(self):
func, statargs, varargs, kwds, expectedFail = self.param
kwds["pixel1"] = 1
kwds["pixel2"] = 1
g = geometry.Geometry(**kwds)
g.wavelength = 1e-10
t0 = time.time()
oldret = getattr(g, func)(*statargs, path=varargs[0])
t1 = time.time()
newret = getattr(g, func)(*statargs, path=varargs[1])
t2 = time.time()
logger.debug("TIMINGS\t meth: %s t=%.3fs\t meth: %s t=%.3fs" % (varargs[0], t1 - t0, varargs[1], t2 - t1))
maxDelta = abs(oldret - newret).max()
msg = "geo=%s%s max delta=%.3f" % (g, os.linesep, maxDelta)
if expectedFail:
self.assertNotAlmostEquals(maxDelta, 0, 3, msg)
else:
self.assertAlmostEquals(maxDelta, 0, 3, msg)
logger.info(msg)
size = 1024
d1, d2 = numpy.mgrid[-size:size:32, -size:size:32]
TESTCASES = [
("tth", (d1, d2), ("cos", "tan"), {'dist':1, 'rot1':0, 'rot2':0, 'rot3':0}, False),
("tth", (d1, d2), ("cos", "tan"), {'rot1':-1, 'rot2':1, 'rot3':1}, False),
("tth", (d1, d2), ("cos", "tan"), {'rot1':-.2, 'rot2':1, 'rot3':-.1}, False),
("tth", (d1, d2), ("cos", "tan"), {'rot1':-1, 'rot2':-.2, 'rot3':1}, False),
("tth", (d1, d2), ("cos", "tan"), {'rot1':1, 'rot2':5, 'rot3':.4}, False),
("tth", (d1, d2), ("cos", "tan"), {'rot1':-1.2, 'rot2':1, 'rot3':1}, False),
("tth", (d1, d2), ("cos", "tan"), {'dist':1e10, 'rot1':-2, 'rot2':2, 'rot3':1}, False),
("tth", (d1, d2), ("cos", "tan"), {'dist':1, 'rot1':3, 'rot2':0, 'rot3':0}, False),
("tth", (d1, d2), ("cos", "tan"), {'rot1':-1, 'rot2':1, 'rot3':3}, False),
("tth", (d1, d2), ("cos", "tan"), {'rot1':-.2, 'rot2':1, 'rot3':-.1}, False),
("tth", (d1, d2), ("cos", "tan"), {'rot1':-3, 'rot2':-.2, 'rot3':1}, False),
("tth", (d1, d2), ("cos", "tan"), {'rot1':1, 'rot2':5, 'rot3':.4}, False),
("tth", (d1, d2), ("cos", "tan"), {'rot1':-1.2, 'rot2':1.6, 'rot3':1}, False),
("tth", (d1, d2), ("cos", "tan"), {'dist':1e10, 'rot1':0, 'rot2':0, 'rot3':0}, False),
("tth", (d1, d2), ("tan", "cython"), {'dist':1, 'rot1':0, 'rot2':0, 'rot3':0}, False),
("tth", (d1, d2), ("tan", "cython"), {'rot1':-1, 'rot2':1, 'rot3':1}, False),
("tth", (d1, d2), ("tan", "cython"), {'rot1':-.2, 'rot2':1, 'rot3':-.1}, False),
("tth", (d1, d2), ("tan", "cython"), {'rot1':-1, 'rot2':-.2, 'rot3':1}, False),
("tth", (d1, d2), ("tan", "cython"), {'rot1':1, 'rot2':5, 'rot3':.4}, False),
("tth", (d1, d2), ("tan", "cython"), {'rot1':-1.2, 'rot2':1, 'rot3':1}, False),
("tth", (d1, d2), ("tan", "cython"), {'dist':1e10, 'rot1':-2, 'rot2':2, 'rot3':1}, False),
("tth", (d1, d2), ("tan", "cython"), {'dist':1, 'rot1':3, 'rot2':0, 'rot3':0}, False),
("tth", (d1, d2), ("tan", "cython"), {'rot1':-1, 'rot2':1, 'rot3':3}, False),
("tth", (d1, d2), ("tan", "cython"), {'rot1':-.2, 'rot2':1, 'rot3':-.1}, False),
("tth", (d1, d2), ("tan", "cython"), {'rot1':-3, 'rot2':-.2, 'rot3':1}, False),
("tth", (d1, d2), ("tan", "cython"), {'rot1':1, 'rot2':5, 'rot3':.4}, False),
("tth", (d1, d2), ("tan", "cython"), {'rot1':-1.2, 'rot2':1.6, 'rot3':1}, False),
("tth", (d1, d2), ("tan", "cython"), {'dist':1e10, 'rot1':0, 'rot2':0, 'rot3':0}, False),
("qFunction", (d1, d2), ("cython", "tan"), {'dist':1, 'rot1':0, 'rot2':0, 'rot3':0}, False),
("qFunction", (d1, d2), ("cython", "tan"), {'rot1':-1, 'rot2':1, 'rot3':1}, False),
("qFunction", (d1, d2), ("cython", "tan"), {'rot1':-.2, 'rot2':1, 'rot3':-.1}, False),
("qFunction", (d1, d2), ("cython", "tan"), {'rot1':-1, 'rot2':-.2, 'rot3':1}, False),
("qFunction", (d1, d2), ("cython", "tan"), {'rot1':1, 'rot2':5, 'rot3':.4}, False),
("qFunction", (d1, d2), ("cython", "tan"), {'rot1':-1.2, 'rot2':1, 'rot3':1}, False),
("qFunction", (d1, d2), ("cython", "tan"), {'dist':1e10, 'rot1':-2, 'rot2':2, 'rot3':1}, False),
("qFunction", (d1, d2), ("cython", "tan"), {'dist':1, 'rot1':3, 'rot2':0, 'rot3':0}, False),
("qFunction", (d1, d2), ("cython", "tan"), {'rot1':-1, 'rot2':1, 'rot3':3}, False),
("qFunction", (d1, d2), ("cython", "tan"), {'rot1':-.2, 'rot2':1, 'rot3':-.1}, False),
("qFunction", (d1, d2), ("cython", "tan"), {'rot1':-3, 'rot2':-.2, 'rot3':1}, False),
("qFunction", (d1, d2), ("cython", "tan"), {'rot1':1, 'rot2':5, 'rot3':.4}, False),
("qFunction", (d1, d2), ("cython", "tan"), {'rot1':-1.2, 'rot2':1.6, 'rot3':1}, False),
("qFunction", (d1, d2), ("cython", "tan"), {'dist':1e10, 'rot1':0, 'rot2':0, 'rot3':0}, False),
("rFunction", (d1, d2), ("cython", "numpy"), {'dist':1, 'rot1':0, 'rot2':0, 'rot3':0}, False),
("rFunction", (d1, d2), ("cython", "numpy"), {'rot1':-1, 'rot2':1, 'rot3':1}, False),
("rFunction", (d1, d2), ("cython", "numpy"), {'rot1':-.2, 'rot2':1, 'rot3':-.1}, False),
("rFunction", (d1, d2), ("cython", "numpy"), {'rot1':-1, 'rot2':-.2, 'rot3':1}, False),
("rFunction", (d1, d2), ("cython", "numpy"), {'rot1':1, 'rot2':5, 'rot3':.4}, False),
("rFunction", (d1, d2), ("cython", "numpy"), {'rot1':-1.2, 'rot2':1, 'rot3':1}, False),
("rFunction", (d1, d2), ("cython", "numpy"), {'dist':1e10, 'rot1':-2, 'rot2':2, 'rot3':1}, False),
("rFunction", (d1, d2), ("cython", "numpy"), {'dist':1, 'rot1':3, 'rot2':0, 'rot3':0}, False),
("rFunction", (d1, d2), ("cython", "numpy"), {'rot1':-1, 'rot2':1, 'rot3':3}, False),
("rFunction", (d1, d2), ("cython", "numpy"), {'rot1':-.2, 'rot2':1, 'rot3':-.1}, False),
("rFunction", (d1, d2), ("cython", "numpy"), {'rot1':-3, 'rot2':-.2, 'rot3':1}, False),
("rFunction", (d1, d2), ("cython", "numpy"), {'rot1':1, 'rot2':5, 'rot3':.4}, False),
("rFunction", (d1, d2), ("cython", "numpy"), {'rot1':-1.2, 'rot2':1.6, 'rot3':1}, False),
("rFunction", (d1, d2), ("cython", "numpy"), {'dist':1e10, 'rot1':0, 'rot2':0, 'rot3':0}, False),
]
def test_suite_all_Geometry():
testSuite = unittest.TestSuite()
testSuite.addTest(TestSolidAngle("testSolidAngle"))
testSuite.addTest(TestBug88SolidAngle("testSolidAngle"))
for param in TESTCASES:
testSuite.addTest(ParameterisedTestCase.parameterise(
TestGeometry, param))
return testSuite
if __name__ == '__main__':
mysuite = test_suite_all_Geometry()
runner = unittest.TextTestRunner()
runner.run(mysuite)
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