Generate heatmap image data from input points. Usable easily with gdal to make heatmap geotiffs from points.
gdal can convert a point dataset (e.g. shapefile, geojson file, etc) into a CSV file, with the X & Y as separate columns. Likewise a CSV file can be converted to a raster file (e.g. GeoTIFF). gdal_grid converts several vector files to raster files, but it doesn't yet have a 'heatmap' function, so I built this to do that
cargo install sheatmap
A Shapefile can be converted to a CSV file with this:
ogr2ogr -f CSV -lco GEOMETRY=AS_XY output.csv input.shp
Create the heatmap raster-as-CSV:
sheatmap -i $< -o $@ --res $(res) $(res) --radius $(radius)
Convert the raster-as-CSV to GeoTIFF:
gdal_translate -a_srs epsg:$(srs) /vsigzip/$< $@
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