srr | R Documentation |
Calculates the Pike (1971) Surface Relief Ratio
srr(x, s = 5, ...)
x |
A terra SpatRaster object |
s |
Focal window size |
... |
Additional arguments passed to terra::lapp |
Describes rugosity in continuous raster surface within a specified window. The implementation of SRR can be shown as: (mean(x) - min(x)) / (max(x) - min(x))
A terra SpatRaster object of Pike's (1971) Surface Relief Ratio
Jeffrey S. Evans <jeffrey_evans@tnc.org>
library(terra)
elev <- rast(system.file("extdata/elev.tif", package="spatialEco"))
r.srr <- srr(elev, s=5)
plot(r.srr, main="Surface Relief Ratio")
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