The FFTW3 library has DCTs in it, but the current PDL module PDL::FFTW3 does not bind to them. You could add the bindings yourself (with either my or Dima’s help if you want), or just use the FFT itself. The latter is simple since you can just Fourier transform a padded version of your data with the correct boundary conditions.
If you want wavelet stuff, I have a binding to Daniel Vollmer’s wavelet compression library that I could send you. That has a wavelet transform in it, and you can choose your mother wavelet (I think it implements Haar and Morlet mother wavelets). I used the library for some stuff, but never got around to making it publication quality. Cheers, Craig http://www.fftw.org/doc/1d-Real_002deven-DFTs-_0028DCTs_0029.html <http://www.fftw.org/doc/1d-Real_002deven-DFTs-_0028DCTs_0029.html> > On Oct 27, 2015, at 10:37 AM, Ingo Schmid <[email protected]> wrote: > > Hi, > > I'd like to experiment with either discrete cosine transforms or wavelet > transforms. Are there any implementations in PDL? > > Ingo > ------------------------------------------------------------------------------ > _______________________________________________ > pdl-general mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/pdl-general
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