Pixell: Rectangular pixel map manipulation and harmonic analysis library

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Ada Coda
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Pixell: Rectangular pixel map manipulation and harmonic analysis library

Post by Ada Coda » Mon Feb 22, 2021 11:51 pm

Pixell: Rectangular pixel map manipulation and harmonic analysis library

Abstract: Pixell loads, manipulates, and analyzes maps stored in rectangular pixelization. It is mainly targeted for use with maps of the sky (e.g., CMB intensity and polarization maps, stacks of 21 cm intensity maps, binned galaxy positions or shear) in cylindrical projection, but its core functionality is more general. It extends numpy's ndarray to an ndmap class that associates a World Coordinate System (WCS) with a numpy array. It includes tools for Fourier transforms (through numpy or pyfft) and spherical harmonic transforms (through libsharp2 (ascl:1402.033)) of such maps and tools for visualization (through the Python Image Library).

Credit: Naess, Sigurd; Madhavacheril, Mathew; Hasselfield, Matthew

Site: https://github.com/simonsobs/pixell
https://ui.adsabs.harvard.edu/abs/2020PhRvD.102b3534M

Bibcode: 2021ascl.soft02003N

ID: ascl:2102.003
Last edited by Ada Coda on Mon Feb 22, 2021 11:55 pm, edited 1 time in total.
Reason: Updated code entry.

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