I am trying to plot a simple heatmap where I have x and y as 2D coordinate pairs, and z values on each of these points. You can see from my screen shot, I have 100% valid z values, but no plot is being generated and when I hover over my plotting domain, NaN z values are reported. I am really baffled by this and would really appreciate some help!
I have a sense of why this is not working now, and that is my data is not structured nicely. All my three x,y,z arrays are 1D vectors. When I plot x and y as a scatter plot, they look like the point cloud figure I show below (just the blue interior dots for now). So the z values are defined on each of these random-looking blue dots. I am not sure whether for this configuration it is still possible to plot a heatmap? I guess I would need some smoothing?
Click here to download my data.