pyratapprox: Approximation by rational functions
pyratapprox provides a Python interface to Julia's RationalFunctionApproximation library, enabling efficient computation of rational function approximations and interpolations.
Installation
pip install pyratapprox
Note: Requires Julia to be installed. The required Julia packages will be installed automatically on first use.
Quick Start
import numpy as np
from pyratapprox import approximate, unitinterval, AAA
# Approximate a function on the unit interval [-1, 1]
f = approximate(np.sin, unitinterval, method=AAA)
# Evaluate the approximation
y = f(0.5)
# Get poles and residues
poles = f.poles()
poles, residues = f.residues()
Documentation
Full documentation is available at: https://complexvariables.github.io/pyratapprox
License
MIT License
Author
Toby Driscoll (driscoll@udel.edu)
1 maintainer
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