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Shannon entropy is calculated for each pixel based on it's layer values. To be used with categorical / integer valued rasters.
rasterEntropy(img, ...)
SpatRaster "entropy"
SpatRaster
additional arguments passed to writeRaster
Entropy is calculated as -sum(p log(p)); p being the class frequency per pixel.
re <- rasterEntropy(rlogo) ggR(re, geom_raster = TRUE)
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