pywt icon indicating copy to clipboard operation
pywt copied to clipboard

PyWavelets - Wavelet Transforms in Python

Results 125 pywt issues
Sort by recently updated
recently updated
newest added

I'm currently reading the 1992 paper by Mallat and Hwang, [Singularity Detection and Processing with Wavelets](https://homepage.iis.sinica.edu.tw/papers/whwang/566-F.pdf), because I'm interested in quantifying how "spiky" a 1D function is at given points....

question

The conda-forge feedstock gained a `ppc64le` build, but it looks completely broken, see https://github.com/conda-forge/pywavelets-feedstock/pull/42. We don't have `ppc64le` CI on this repo, which is probably the right thing to add,...

bug

Hi everyone, I am working on wavelet transform OFDM. For that, I want to do an Inverse wavelet packet transform of the data at the transmitter. However, IWPT depends on...

question

Since the `swt` is not an orthogonal transform, its adjoint is different form its inverse. Because it's not [just a question of padding](https://github.com/PyWavelets/pywt/issues/472), we cannot even make the approximation. It...

enhancement
needs-decision

Hi, I am trying to replicate the results from the classic wavelet example of Torrence & Compo, 1998 using `pywt.cwt()`, but could not get it right. I have pasted the...

question

### Complex Morlet coefficients should always be symmetric This issue may be related to issue #531. The complex Morlet wavelet at fractional scales is not symmetric in the real part...

bug

Hi everyone, First of all, let me say that this library is awesome. I have seen how this has evolved and at the moment the library is great. I am...

wontfix

It just occurred to me that I wrote a pure python unencumbered implementation of the DT-CWT which might fit into this toolbox [here](https://github.com/hgomersall/pyDTCWT). It's written mostly for algorithmic understanding, not...

enhancement

I've been happily using Aaron O'Leary's Morlet wavelet transform code (https://github.com/aaren/wavelets) for a while. I wanted to make sure I stayed abreast of other developments in the Python wavelet world...

question

As can be seen [here](http://wavelets.pybytes.com/wavelet/db2/), the values returned by wave.wavefun although correct in 𝜙 and ψ, have wrong values for `xs` as they are only valid for the scaling function,...

task