RStoolbox: rasterEntropy – R documentation

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rasterEntropy

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.

rasterEntropy(img, ...)

`img`	RasterStack or RasterBrick
`...`	additional arguments passed to writeRaster

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

RasterLayer "entropy"

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

Tools for Remote Sensing Data Analysis

v0.2.6

GPL (>= 3)

Authors

Benjamin Leutner [cre, aut], Ned Horning [aut], Jakob Schwalb-Willmann [aut], Robert J. Hijmans [ctb]

Initial release