FLAG: Exact Fourier-Laguerre transform on the ball

Discussion topics for individual codes
Post Reply
Ada Coda
ASCL Robot
Posts: 1954
Joined: Thu May 08, 2014 5:37 am

FLAG: Exact Fourier-Laguerre transform on the ball

Post by Ada Coda » Mon Oct 16, 2017 2:23 pm

FLAG: Exact Fourier-Laguerre transform on the ball

Abstract: FLAG is a fast implementation of the Fourier-Laguerre Transform, a novel 3D transform exploiting an exact quadrature rule of the ball to construct an exact harmonic transform in 3D spherical coordinates. The angular part of the Fourier-Laguerre transform uses the MW sampling theorem and the exact spherical harmonic transform implemented in the SSHT code. The radial sampling scheme arises from an exact quadrature of the radial half-line using damped Laguerre polynomials. The radial transform can in fact be used to compute the spherical Bessel transform exactly, and the Fourier-Laguerre transform is thus closely related to the Fourier-Bessel transform.

Credit: Leistedt, Boris; McEwen, Jason

Site: https://github.com/astro-informatics/flag

Bibcode: 2017ascl.soft10007L

Preferred citation method: Please cite https://ui.adsabs.harvard.edu/abs/2012ITSP...60.6257L and https://ui.adsabs.harvard.edu/abs/2011ITSP...59.5876M and reference http://astro-informatics.github.io/flaglet

ID: ascl:1710.007
Last edited by Ada Coda on Sat Apr 03, 2021 1:12 am, edited 1 time in total.
Reason: Updated code entry.

Post Reply