generalised FFTLog for integral transforms
Project description
fftl
— generalised FFTLog for Python
The fftl
package for Python contains a routine to calculate integral
transforms of the type ã(k) = ∫ a(r) T(kr) dr for arbitrary kernels T. It
uses a modified FFTLog [2] method of Hamilton [1] to efficiently compute the
transform on logarithmic input and output grids.
Besides the generalised FFTLog algorithm, the package also provides a number of standard integral transforms.
Installation
Install with pip:
pip install fftl
For development, it is recommended to clone the GitHub repository, and perform an editable pip installation.
The core package only requires numpy
. The standard integral transform module
additionally requires scipy
.
Usage
The core functionality of the package is provided by the fftl
module. The
fftl()
routine computes the generalised FFTLog integral transform for a
given kernel.
For convenience, a number of standard integral transforms are implemented in
the fftl.transforms
module.
User manual
References
- Hamilton A. J. S., 2000, MNRAS, 312, 257 (astro-ph/9905191)
- Talman J. D., 1978, J. Comp. Phys., 29, 35
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