def testSC(self): """test that datasets are unchanged after various comression/decompressions""" obt_np = compression.decByteOffset_numpy(compression.compByteOffset_numpy(self.ds)) self.assertEqual(abs(self.ds - obt_np).max(), 0.0, "numpy algo") obt_cy = compression.decByteOffset_cython(compression.compByteOffset_numpy(self.ds)) self.assertEqual(abs(self.ds - obt_cy).max(), 0.0, "cython algo") obt_cy2 = compression.decByteOffset_cython(compression.compByteOffset_numpy(self.ds), self.ds.size) self.assertEqual(abs(self.ds - obt_cy2).max(), 0.0, "cython algo_orig")
def testComp(self): """ """ ds = numpy.array([0, 128]) ref = b"\x00\x80\x80\00" self.assertEqual(ref, compression.compByteOffset_numpy(ds), "test +128") ds = numpy.array([0, -128]) ref = b'\x00\x80\x80\xff' self.assertEqual(ref, compression.compByteOffset_numpy(ds), "test -128") ds = numpy.array([10, -128]) ref = b'\n\x80v\xff' self.assertEqual(ref, compression.compByteOffset_numpy(ds), "test +10 -128") self.assertEqual(self.ref, compression.compByteOffset_numpy(self.ds) , "test larger")
def testComp(self): """ """ # first with numpy ds = numpy.array([0, 128]) ref = b"\x00\x80\x80\00" self.assertEqual(ref, compression.compByteOffset_numpy(ds), "test +128") ds = numpy.array([0, -128]) ref = b'\x00\x80\x80\xff' self.assertEqual(ref, compression.compByteOffset_numpy(ds), "test -128") ds = numpy.array([10, -128]) ref = b'\n\x80v\xff' self.assertEqual(ref, compression.compByteOffset_numpy(ds), "test +10 -128") self.assertEqual(self.ref, compression.compByteOffset_numpy(self.ds), "test larger") # Then with cython 32 bits ds = numpy.array([0, 128], dtype="int32") ref = b"\x00\x80\x80\00" self.assertEqual(ref, compression.compByteOffset_cython(ds), "test +128") ds = numpy.array([0, -128], dtype="int32") ref = b'\x00\x80\x80\xff' self.assertEqual(ref, compression.compByteOffset_cython(ds), "test -128") ds = numpy.array([10, -128], dtype="int32") ref = b'\n\x80v\xff' self.assertEqual(ref, compression.compByteOffset_cython(ds), "test +10 -128") self.assertEqual(self.ref, compression.compByteOffset_cython(self.ds), "test larger") # Then with cython 64bits ds = numpy.array([0, 128], dtype="int64") ref = b"\x00\x80\x80\00" self.assertEqual(ref, compression.compByteOffset_cython(ds), "test +128") ds = numpy.array([0, -128], dtype="int64") ref = b'\x00\x80\x80\xff' self.assertEqual(ref, compression.compByteOffset_cython(ds), "test -128") ds = numpy.array([10, -128], dtype="int64") ref = b'\n\x80v\xff' self.assertEqual(ref, compression.compByteOffset_cython(ds), "test +10 -128") self.assertEqual(self.ref, compression.compByteOffset_cython(self.ds), "test larger")
def testSC(self): """test that datasets are unchanged after various compression/decompressions""" obt_np = compression.decByteOffset_numpy(compression.compByteOffset_numpy(self.ds)) self.assertEqual(abs(self.ds - obt_np).max(), 0.0, "numpy-numpy algo") obt_cy = compression.decByteOffset_cython(compression.compByteOffset_numpy(self.ds)) self.assertEqual(abs(self.ds - obt_cy).max(), 0.0, "cython-numpy algo") obt_cy2 = compression.decByteOffset_cython(compression.compByteOffset_numpy(self.ds), self.ds.size) self.assertEqual(abs(self.ds - obt_cy2).max(), 0.0, "cython2-numpy algo_orig") obt_np = compression.decByteOffset_numpy(compression.compByteOffset_cython(self.ds)) self.assertEqual(abs(self.ds - obt_np).max(), 0.0, "numpy-numpy algo") obt_cy = compression.decByteOffset_cython(compression.compByteOffset_cython(self.ds)) self.assertEqual(abs(self.ds - obt_cy).max(), 0.0, "cython-numpy algo") obt_cy2 = compression.decByteOffset_cython(compression.compByteOffset_cython(self.ds), self.ds.size) self.assertEqual(abs(self.ds - obt_cy2).max(), 0.0, "cython2-numpy algo_orig")
import numpy from fabio import compression test = numpy.array([0, 1, 2, 127, 0, 1, 2, 128, 0, 1, 2, 32767, 0, 1, 2, 32768, 0, 1, 2, 2147483647, 0, 1, 2, 2147483648, 0, 1, 2, 128, 129, 130, 32767, 32768, 128, 129, 130, 32768, 2147483647, 2147483648]) b = compression.compByteOffset_numpy(test) print(compression.decByteOffset_cython(b) - test) print(compression.decByteOffset_numpy(b) - test)
import numpy from fabio import compression test = numpy.array([ 0, 1, 2, 127, 0, 1, 2, 128, 0, 1, 2, 32767, 0, 1, 2, 32768, 0, 1, 2, 2147483647, 0, 1, 2, 2147483648, 0, 1, 2, 128, 129, 130, 32767, 32768, 128, 129, 130, 32768, 2147483647, 2147483648 ]) b = compression.compByteOffset_numpy(test) print(compression.decByteOffset_cython(b) - test) print(compression.decByteOffset_numpy(b) - test)