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add outfile option to calc_datacube #646

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add outfile option to calc_datacube #646

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12 changes: 11 additions & 1 deletion poppy/instrument.py
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Original file line number Diff line number Diff line change
Expand Up @@ -298,7 +298,7 @@ def calc_psf(self, outfile=None, source=None, nlambda=None, monochromatic=None,
else:
return result

def calc_datacube(self, wavelengths, progressbar=False, *args, **kwargs):
def calc_datacube(self, wavelengths, progressbar=False, outfile=None, overwrite=True, *args, **kwargs):
"""Calculate a spectral datacube of PSFs
Parameters
Expand All @@ -311,7 +311,12 @@ def calc_datacube(self, wavelengths, progressbar=False, *args, **kwargs):
while iterating over wavelengths. Note, this requires the
optional dependency package 'tqdm', which is not included as
a requirement.
outfile : string
Filename to write. If None, then result is returned as an HDUList
overwrite : bool
overwrite output FITS file if it already exists?
Additional parameters are passed through to calc_datacube
"""

# Allow up to 10,000 wavelength slices. The number matters because FITS
Expand Down Expand Up @@ -355,6 +360,11 @@ def wavelength_as_meters(wavelength):
cube[ext].header.add_history(h)

cube[0].header['NWAVES'] = nwavelengths
if outfile is not None:
cube[0].header["FILENAME"] = (os.path.basename(outfile), "Name of this file")
cube.writeto(outfile, overwrite=overwrite)
poppy_core._log.info("Saved result to " + outfile)

return cube

def _calc_psf_format_output(self, result, options):
Expand Down
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