Hi, I'm actually busy writing a visualization package based on OpenGL. The interface is similar to matplotlib and Matlab. You can do regular plotting with it, but is also aimed at 3D visualization, including volume rendering.
It's not quite finished yet, so I'm not sure if it'll help you right now... But maybe in a few weeks I might release a first version. I want it to work with py2exe myself, so I hope to make that available out of the box. You also mentioned fft, smoothing, etc. I would advice you to use scipy for that. Cheers, Almar
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