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[ENH] Add channel to NeaSpectra #41

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Merged
ngergihun merged 1 commit into from
Dec 10, 2025
Merged

[ENH] Add channel to NeaSpectra #41

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17 changes: 17 additions & 0 deletions pySNOM/spectra.py
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Original file line number Diff line number Diff line change
Expand Up @@ -91,6 +91,19 @@ def parameters(self):
"""Property - scantype (ScanType Enum name)"""
return self._parameters

def add_channel(self, values, channelname, zerofilling=1):
"""Adds a new channel to data dictionary"""
if channelname not in list(self._data.keys()):
self._data[channelname] = np.reshape(
values,
(
int(self.parameters["PixelArea"][0]),
int(self.parameters["PixelArea"][1]),
int(self.parameters["PixelArea"][2]*zerofilling),
),
)
else:
raise ValueError

class SingleChannelSpectrum(NeaSpectrum):
def __init__(
Expand Down Expand Up @@ -228,6 +241,10 @@ def reshape_spectrum_data(data, params):
spectral_depth = len(np.unique(data["Index"]))
elif "Omega" in allchannels:
spectral_depth = len(np.unique(data["Omega"]))
elif "Wavenumber" in allchannels:
spectral_depth = len(np.unique(data["Wavenumber"]))
elif "Wavelength" in allchannels:
spectral_depth = len(np.unique(data["Wavelength"]))
else:
spectral_depth = params["PixelArea"][2] * n

Expand Down
12 changes: 12 additions & 0 deletions pySNOM/tests/test_spectra.py
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,18 @@ def test_pointspectrum_object(self):
np.testing.assert_string_equal(s.scantype, "Point")
np.testing.assert_equal(np.shape(s.data["O2A"])[0], 2048)

def test_add_channel(self):
f = "datasets/testspectrum_singlepoint.txt"
file_reader = readers.NeaSpectralReader(os.path.join(pySNOM.__path__[0], f))
data, params = file_reader.read()

newchannel = np.zeros(np.shape(data["O3A"]))
s = spectra.NeaSpectrum(data, params)
s.add_channel(newchannel, "O6A",zerofilling=2)

np.testing.assert_almost_equal(s.data["O6A"][0], 0)


def test_multipointspectrum_object(self):
f = "datasets/testspectrum_multipoint.txt"
file_reader = readers.NeaSpectralReader(os.path.join(pySNOM.__path__[0], f))
Expand Down