I have points scattered around some origin point, each with a score. The score should be zero at the origin (similar to distance). I want to generate smooth contour lines from these points.
The red numbers are the score for a particular point, the blue icon is the origin.
I tried the Contour tool (from vector) and the result is far too jagged. Next I tried IDW Interpolation with a relaxed distance coefficient (p=2, max is 100). The result is closer to what I want, but still a bit overfit.
I'm considering removing the far-away point to the south and expanding the extent with a template polygon. Any other recommendations for making this look better?
Wanted to mention I tried a lot of other methods too. Heatmap KDE offers a way to scale the radius by my
score in addition to the heatmap weights. I'm curious how this works. Is the radius used for the gaussian kernel selectively larger for those points with a larger score? How is this different than for the weight?