ASCL Code Record
[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.497.2699F
- Bibcode:
- 2020ascl.soft06004F
Preferred citation method:
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