Hello
I was testing the 'zbounds' option on 'map2alm' subroutine in fortran and noticed some discrepancy between running 'map2alm' on full sky and and on a strip (with 'zbounds' specified), at a level that seems worrisome especially towards 'lmax.' I took a simulated map and masked everywhere but the center strip (here) and computed C_l on full sky and strips of various cuts with 'zbounds,' including all of the center nonzero pixels. The plot here shows the difference between the full sky and various cut results. I was wondering if anyone has seen this before.
Thanks,
Steve
Healpix 3.11 map2alm zbounds
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- Joined: August 11 2014
- Affiliation: Princeton University