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Calculates focal statistical moments of a raster
raster.moments(x, type = "mean", s = 3, p = 0.75, ...)
A terra SpatRaster object representing the local distributional moment
A terra SpatRaster object
The global statistic to represent the local deviation options are: "min", "min", "mean", "median", "var, "sd", "mad", "kurt", "skew", "quantile"
Size of matrix (focal window), can be single value or two values defining the [x,y] dimensions of the focal matrix
if type="quantile", the returned percentile.
Additional arguments passed to terra::focal
Jeffrey S. Evans <jeffrey_evans@tnc.org>
This is a simple wrapper for the terra focal function, returning local statistical moments
# \donttest{
library(terra)
r <- rast(nrows=500, ncols=500, xmin=571823, xmax=616763,
ymin=4423540, ymax=4453690)
crs(r) <- "epsg:9001"
r[] <- runif(ncell(r), 1000, 2500)
# Calculate 10th percentile for 3x3 window
r.p10 <- raster.moments(r, type="quantile", p=0.10)
# }
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