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Fast Chebyshev Transform (1D)

version 1.0.0.0 (1.32 KB) by Greg von Winckel
Transfroms between nodal and spectral values.

3.9K Downloads

Updated 29 Mar 2005

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This script allows for fast transformation between nodal and spectral values at the Chebyshev-Gauss-Lobatto points by using the built-in functions fft/ifft. I've tested it with truncation as high as N=2^20 and it takes 1.7820 seconds. This script will handle an arbitrary number of data sets of the same length simultaneously.

Cite As

Greg von Winckel (2021). Fast Chebyshev Transform (1D) (https://www.mathworks.com/matlabcentral/fileexchange/4591-fast-chebyshev-transform-1d), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R14
Compatible with any release
Platform Compatibility
Windows macOS Linux
Acknowledgements

Inspired: ORTHPOLYFIT, ORTHPOLYVAL

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