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[ascl:2006.004] 2D-FFTLog: Generalized FFTLog algorithm for non-Gaussian covariance matrices

2D-FFTLog takes the FFTLog algorithm for 1D Hankel transforms and generalizes it for 2D Hankel transforms. The algorithm is useful for efficiently computing non-Gaussian covariance matrices of cosmological 2-point statistics in configuration space from Fourier space covariances. Fast bin-averaging method is also developed for both the logarithmic binning and general binning choices. C and Python versions of the code are available.

Code site:
https://github.com/xfangcosmo/2DFFTLog
Described in:
https://ui.adsabs.harvard.edu/abs/2020MNRAS.tmp.1865F
Bibcode:
2020ascl.soft06004F

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ascl:2006.004
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