That would be cool - let me know if you need some support from the Qwt related part.
By the way: Guðjón finished his work on the Qwt python wrapper ( https://github.com/GauiStori/PyQt-Qwt ) and with an updated version of QwtPlot3d he might be interested to do the same for QwtPlot3D. Then we would have everything back, that existed for Qt4/Qwt5.
Uwe
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