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Add handling for WavelengthError (when Wavelength is not present due to a calibration) #9

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Add handling for WavelengthError (when Wavelength is not present due to a calibration) #9

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227034e
Update spe2py.py
MicroSnail Jul 19, 2021
5a9f7b8
Update spe2py.py
MicroSnail Jul 19, 2021
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18 changes: 16 additions & 2 deletions spe2py.py
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Original file line number Diff line number Diff line change
Expand Up @@ -158,12 +158,26 @@ def _get_wavelength(self):
try:
wavelength_string = StringIO(self.footer.SpeFormat.Calibrations.WavelengthMapping.Wavelength.cdata)
except AttributeError:
print("XML Footer was not loaded prior to calling _get_wavelength")
raise
"""
possibly because a calibration is present.
Try getting the WavelengthError.cdata instead of Wavelength.cdata when calibration is present.
"""
try:
wavelengthErrorStr = self.footer.SpeFormat.Calibrations.WavelengthMapping.WavelengthError.cdata
wavelengthErrorStrStream = StringIO(wavelengthErrorStr.replace(" ", "\n"))
wavelengthError = np.loadtxt(wavelengthErrorStrStream, delimiter=',')
return wavelengthError[:,0]
except:
print("XML Footer was not loaded prior to calling _get_wavelength")
return
except IndexError:
print("XML Footer does not contain Wavelength Mapping information")
return





wavelength = np.loadtxt(wavelength_string, delimiter=',')

return wavelength
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