Hi
I'm trying to figure out a way to create contour plots of data which is not necessarily on a rectangular grid. The examples shown on https://qwt.sourceforge.io/spectrogramscreenshots.html are all on rectangular grid (XY plane), while I need something like this:
Capture.jpg
Assuming all data is in eg. a three column table of X, Y, and Z values.
Can this be done in some way using Qwt?
BR,
Urban