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Spectral cube arithmetic is non-commutative when combined with quantities #839

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keflavich opened this issue Aug 30, 2022 · 0 comments

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keflavich commented Aug 30, 2022

from spectral_cube import SpectralCube
from astropy import units as u
cube = SpectralCube.read('http://www.astropy.org/astropy-data/l1448/l1448_13co.fits')
fivecube = cube * 5  # all good, this is a cube
failure = 5 * cube  # kinda ok, this raises an exception
bug = 5*u.km * cube  # this results in a numpy array

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