Multi-layer Pixel Entropy

Shannon entropy is calculated for each pixel based on it's layer values. To be used with categorical / integer valued rasters.

Usage

rasterEntropy(img, ...)

Arguments

img

SpatRaster

...

additional arguments passed to writeRaster

Value

SpatRaster "entropy"

Details

Entropy is calculated as -sum(p log(p)); p being the class frequency per pixel.

Examples

re <- rasterEntropy(rlogo)
ggR(re, geom_raster = TRUE)