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AbsorptionShapesTest.py
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AbsorptionShapesTest.py
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# Mantid Repository : https://github.com/mantidproject/mantid
#
# Copyright © 2018 ISIS Rutherford Appleton Laboratory UKRI,
# NScD Oak Ridge National Laboratory, European Spallation Source,
# Institut Laue - Langevin & CSNS, Institute of High Energy Physics, CAS
# SPDX - License - Identifier: GPL - 3.0 +
import unittest
import numpy as np
from Direct.AbsorptionShapes import (anAbsorptionShape, Cylinder, FlatPlate, HollowCylinder, Sphere)
from mantid.simpleapi import (CreateSampleWorkspace, ConvertUnits, EditInstrumentGeometry)
class AbsorbtionShapesTest(unittest.TestCase):
def __init__(self, methodName):
return super(AbsorbtionShapesTest, self).__init__(methodName)
def test_an_Absrpn_shape_parent(self):
ash = anAbsorptionShape(['V'])
res = ash.material
self.assertEqual(res['ChemicalFormula'], 'V')
ash.material = 'Cr'
res = ash.material
self.assertEqual(res['ChemicalFormula'], 'Cr')
ash.material = ['Br', 10]
res = ash.material
self.assertEqual(res['ChemicalFormula'], 'Br')
self.assertEqual(res['SampleNumberDensity'], 10)
ash.material = {'ChemicalFormula': 'Al', 'SampleNumberDensity': 0.5}
res = ash.material
self.assertEqual(res['ChemicalFormula'], 'Al')
self.assertEqual(res['SampleNumberDensity'], 0.5)
self.assertRaises(TypeError, anAbsorptionShape.material.__set__, ash, [1, 2, 3])
self.assertRaises(TypeError, anAbsorptionShape.material.__set__, ash, [1, 2])
ash = anAbsorptionShape({'AtomicNumber': 12, 'AttenuationXSection': 0.5, 'SampleMassDensity': 120})
res = ash.material
self.assertEqual(res['AtomicNumber'], 12)
self.assertEqual(res['AttenuationXSection'], 0.5)
self.assertEqual(res['SampleMassDensity'], 120)
# Add extra material property, consistent with other properties.
ash.material = {'ScatteringXSection': 20}
res = ash.material
self.assertEqual(res['AttenuationXSection'], 0.5)
self.assertEqual(res['ScatteringXSection'], 20)
self.assertEqual(len(res), 4)
def test_adsrp_cylinder(self):
ash = Cylinder('V', [10, 2])
res = ash.shape
self.assertEqual(res['Height'], 10)
self.assertEqual(res['Radius'], 2)
self.assertTrue(ash._axis_is_default)
ash.shape = [5, 1, [0, 1, 0], [0., 0., -0.5]]
res = ash.shape
self.assertEqual(res['Height'], 5)
self.assertEqual(res['Radius'], 1)
self.assertEqual(res['Axis'], [0, 1, 0])
self.assertEqual(res['Center'], [0, 0, -0.5])
self.assertFalse(ash._axis_is_default)
ash.shape = {'Height': 5, 'Radius': 2, 'Axis': [1, 0, 0], 'Center': [0., 0., 0.]}
res = ash.shape
self.assertEqual(res['Height'], 5)
self.assertEqual(res['Radius'], 2)
self.assertEqual(res['Axis'], [1, 0, 0])
self.assertEqual(res['Center'], [0, 0, 0])
test_ws = CreateSampleWorkspace(NumBanks=1, BankPixelWidth=1)
test_ws = ConvertUnits(test_ws, 'DeltaE', Emode='Direct', EFixed=2000)
cor_ws, corrections = ash.correct_absorption(test_ws, is_fast=True)
n_bins = corrections.blocksize()
corr_ranges = [n_bins, corrections.readY(0)[0], corrections.readY(0)[n_bins - 1]]
np.testing.assert_almost_equal(corr_ranges, [97, 0.0, 0.0], 4)
mccor_ws, mc_corr = ash.correct_absorption(test_ws, EventsPerPoint=300)
n_bins = mc_corr.blocksize()
mccorr_ranges = [n_bins, mc_corr.readY(0)[0], mc_corr.readY(0)[n_bins - 1]]
np.testing.assert_almost_equal(mccorr_ranges, [97, 0.266, 0.033], 3)
def test_MARI_axis_cylinder(self):
""" Test that default axis for MARI is different"""
ash = Cylinder('Fe', [10, 2])
res = ash.shape
self.assertEqual(res['Height'], 10)
self.assertEqual(res['Radius'], 2)
self.assertTrue(ash._axis_is_default)
test_ws = CreateSampleWorkspace(NumBanks=1, BankPixelWidth=1)
test_ws = ConvertUnits(test_ws, 'DeltaE', Emode='Direct', EFixed=2000)
cor_ws, corrections = ash.correct_absorption(test_ws, is_fast=True)
res = ash.shape
self.assertEqual(res['Axis'], [0., 1., 0])
EditInstrumentGeometry(test_ws, [1], [0], InstrumentName='MARI')
cor_ws, corrections = ash.correct_absorption(test_ws, is_fast=True)
res = ash.shape
self.assertEqual(res['Axis'], [1., 0., 0])
def test_adsrp_Plate(self):
ash = FlatPlate('V', [10, 2, 0.1])
res = ash.shape
self.assertEqual(res['Height'], 10)
self.assertEqual(res['Width'], 2)
self.assertEqual(res['Thick'], 0.1)
ash.shape = [5, 1, 0.2, [0, 1, 0], 10]
res = ash.shape
self.assertEqual(res['Height'], 5)
self.assertEqual(res['Width'], 1)
self.assertEqual(res['Thick'], 0.2)
self.assertEqual(res['Center'], [0, 1, 0])
self.assertEqual(res['Angle'], 10)
ash.shape = {'Height': 5, 'Width': 1, 'Thick': 2, 'Center': [0., 0., 0.], 'Angle': 20}
res = ash.shape
self.assertEqual(res['Height'], 5)
self.assertEqual(res['Width'], 1)
self.assertEqual(res['Thick'], 2)
self.assertEqual(res['Center'], [0, 0, 0])
self.assertEqual(res['Angle'], 20)
test_ws = CreateSampleWorkspace(NumBanks=1, BankPixelWidth=1)
test_ws = ConvertUnits(test_ws, 'DeltaE', Emode='Direct', EFixed=2000)
cor_ws, corrections = ash.correct_absorption(test_ws, is_fast=True, ElementSize=5)
n_bins = corrections.blocksize()
corr_ranges = [n_bins, corrections.readY(0)[0], corrections.readY(0)[n_bins - 1]]
np.testing.assert_almost_equal(corr_ranges, [97, 0., 0.], 4)
mccor_ws, mc_corr = ash.correct_absorption(test_ws, is_mc=True, EventsPerPoint=300)
n_bins = mc_corr.blocksize()
mccorr_ranges = [n_bins, mc_corr.readY(0)[0], mc_corr.readY(0)[n_bins - 1]]
np.testing.assert_almost_equal(mccorr_ranges, [97, 0.52, 0.13], 2)
def test_adsrp_hollow_cylinder(self):
ash = HollowCylinder('V', [10, 2, 4])
res = ash.shape
self.assertEqual(res['Height'], 10)
self.assertEqual(res['InnerRadius'], 2)
self.assertEqual(res['OuterRadius'], 4)
ash.shape = [5, 1, 2, [1, 0, 0], [0, 0, 0]]
res = ash.shape
self.assertEqual(res['Height'], 5)
self.assertEqual(res['InnerRadius'], 1)
self.assertEqual(res['OuterRadius'], 2)
self.assertEqual(res['Axis'], [1, 0, 0])
self.assertEqual(res['Center'], [0, 0, 0])
ash.shape = {'Height': 5, 'InnerRadius': 0.01, 'OuterRadius': 2, 'Center': [0., 0., 0.], 'Axis': [0, 1, 0]}
res = ash.shape
self.assertEqual(res['Height'], 5)
self.assertEqual(res['InnerRadius'], 0.01)
self.assertEqual(res['OuterRadius'], 2)
self.assertEqual(res['Axis'], [0, 1, 0])
self.assertEqual(res['Center'], [0, 0, 0])
test_ws = CreateSampleWorkspace(NumBanks=1, BankPixelWidth=1)
test_ws = ConvertUnits(test_ws, 'DeltaE', Emode='Direct', EFixed=2000)
cor_ws, corrections = ash.correct_absorption(test_ws, is_fast=True, ElementSize=5)
n_bins = corrections.blocksize()
corr_ranges = [n_bins, corrections.readY(0)[0], corrections.readY(0)[n_bins - 1]]
np.testing.assert_almost_equal(corr_ranges, [97, 0.0, 0.000], 4)
mccor_ws, mc_corr = ash.correct_absorption(test_ws, is_mc=True, EventsPerPoint=300)
n_bins = mc_corr.blocksize()
mccorr_ranges = [n_bins, mc_corr.readY(0)[0], mc_corr.readY(0)[n_bins - 1]]
np.testing.assert_almost_equal(mccorr_ranges, [97, 0.27, 0.03], 2)
#
def test_string_conversion(self):
""" check if shape conversion to string representation works"""
ash = HollowCylinder('V', [10, 2, 4])
ash_str = str(ash)
ash_rec = anAbsorptionShape.from_str(ash_str)
self.assertTrue(isinstance(ash_rec, HollowCylinder))
self.assertDictEqual(ash.material, ash_rec.material)
self.assertDictEqual(ash.shape, ash_rec.shape)
ash = Sphere(['Al', 10], 10)
ash_str = str(ash)
ash_rec = anAbsorptionShape.from_str(ash_str)
self.assertTrue(isinstance(ash_rec, Sphere))
self.assertDictEqual(ash.material, ash_rec.material)
self.assertDictEqual(ash.shape, ash_rec.shape)
#
def test_adsrp_sphere(self):
ash = Sphere('Al', 10)
res = ash.shape
self.assertEqual(res['Radius'], 10)
ash.shape = [5, [1, 0, 0]]
res = ash.shape
rad = res['Radius']
self.assertEqual(rad, 5)
cen = res['Center']
self.assertEqual(cen, [1, 0, 0])
ash.shape = {'Radius': 3, 'Center': [0., 0., 0.]}
res = ash.shape
rad = res['Radius']
self.assertEqual(rad, 3)
cen = res['Center']
self.assertEqual(cen, [0, 0, 0])
test_ws = CreateSampleWorkspace(NumBanks=1, BankPixelWidth=1)
test_ws = ConvertUnits(test_ws, 'DeltaE', Emode='Direct', EFixed=2000)
cor_ws, corrections = ash.correct_absorption(test_ws, is_fast=True, ElementSize=6)
n_bins = corrections.blocksize()
corr_ranges = [n_bins, corrections.readY(0)[0], corrections.readY(0)[n_bins - 1]]
np.testing.assert_almost_equal(corr_ranges, [97, 0.0, 0.0], 4)
cor_ws, corrections = ash.correct_absorption(test_ws, is_fast=True)
n_bins = corrections.blocksize()
corr_ranges = [n_bins, corrections.readY(0)[0], corrections.readY(0)[n_bins - 1]]
np.testing.assert_almost_equal(corr_ranges, [97, 0.0, 0.0], 4)
mccor_ws, mc_corr = ash.correct_absorption(test_ws, is_mc=True, EventsPerPoint=300)
n_bins = mc_corr.blocksize()
mccorr_ranges = [n_bins, mc_corr.readY(0)[0], mc_corr.readY(0)[n_bins - 1]]
np.testing.assert_almost_equal(mccorr_ranges, [97, 0.66, 0.51], 2)
if __name__ == "__main__":
# ast = AbsorbtionShapesTest('test_adsrp_cylinder')
# ast.test_adsrp_cylinder()
unittest.main()