Created
November 8, 2016 02:02
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relative values within a moving window
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| library(raster) | |
| r <- raster('path\\to\\your\\file.ext') | |
| winmin <- function(x) min(x, na.rm = T) | |
| winmax <- function(x) max(x, na.rm = T) | |
| focalmin <- focal(r, w = matrix(1, ncol = 3, nrow = 3), winmin) | |
| focalmax <- focal(r, w = matrix(1, ncol = 3, nrow = 3), winmax) | |
| rel_el <- abs(focalmin - focalmax) | |
| writeRaster(rel_el, file='path\\and\\output\\filename.ext') |
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