def test_numpress_pic(self):
data = mzml_spectra[0]['intensity array']
encoded = base64.b64encode(
pynumpress.encode_pic(data).tobytes()).decode('ascii')
record = aux.BinaryDataArrayTransformer()._make_record(
encoded, 'MS-Numpress positive integer compression', data.dtype)
self.assertTrue(np.allclose(data, record.decode(), atol=0.6))
def test_numpress_linear(self):
data = mzml_spectra[0]['intensity array']
encoded = base64.b64encode(
pynumpress.encode_linear(
data, pynumpress.optimal_linear_fixed_point(
data)).tobytes()).decode('ascii')
record = aux.BinaryDataArrayTransformer()._make_record(
encoded, 'MS-Numpress linear prediction compression', data.dtype)
self.assertTrue(np.allclose(data, record.decode(), rtol=0.001))
def test_numpress_slof_zlib(self):
data = mzml_spectra[0]['intensity array']
encoded = base64.b64encode(
zlib.compress(
pynumpress.encode_slof(
data, pynumpress.optimal_slof_fixed_point(
data)).tobytes())).decode('ascii')
record = aux.BinaryDataArrayTransformer()._make_record(
encoded,
'MS-Numpress short logged float compression followed by zlib compression',
data.dtype)
self.assertTrue(np.allclose(data, record.decode(), rtol=0.001))
