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order of C_ell different from HEALPIX! #64

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zonca opened this Issue · 2 comments

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Andrea Zonca crosset
Andrea Zonca
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Order of spectra in HEALPIX is .... TE, TB, EB:
http://healpix.jpl.nasa.gov/html/facilitiesnode7.htm

while the order in healpy is .... TE, EB, TB:
https://github.com/healpy/healpy/blob/master/healpy/sphtfunc.py#L79

I fixed the test case on anafast, see related commit.
What is strange is that healpy uses HEALPIX C++ which uses the same convention as the fortran code.

Cyrille, do you have an idea of what might causing this?

crosset
Owner
Andrea Zonca
Owner

internally we use row order anyway, so I think it would be better to use HealPix order for input/output, as it makes more sense to list them in order of amplitude or importance, and better be compatible with HealPix.

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