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Calculates the Pike (1971) Surface Relief Ratio
srr(x, s = 5, ...)
A terra SpatRaster object of Pike's (1971) Surface Relief Ratio
A terra SpatRaster object
Focal window size
Additional arguments passed to terra::lapp
Jeffrey S. Evans <jeffrey_evans@tnc.org>
# \donttest{ 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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