On the relevant forum (R) there are multiple examples to clustering techniques and heat map generation.
I idd adapted the surface builder method and use standard Gaussian calculation for hotspot generation. Picture shows surface building, generalizer and then rebuilding surface (to make it look nice)
Gradient building and gradient bar use same calculations, just different transformers.
Table created with same values etc. (table unreadable in pic ass actual map is large 300dpi A0)
Map was created using Mapnick Rasterizer (With a lot of sweat !) 26min runtime.
Trying the R caller recently to see how it fairs.
This thread is a decade old but hopefully someone will see this - is it possible to use FME to create a HeatMap for KML (Google Earth)?
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