Surface Relief Ratio

Source: R/srr.R

Calculates the Pike (1971) Surface Relief Ratio

srr(x, s = 5, ...)

Arguments

x

raster object
s

Focal window size
...

Additional arguments passed to raster::calc

Value

raster class object of Pike's (1971) Surface Relief Ratio

Note

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))

Author

Jeffrey S. Evans <jeffrey_evans@tnc.org>

Examples

# \donttest{
  library(raster)
  data(elev)
  r.srr <- srr(elev, s=5)
    plot(r.srr, main="Surface Relief Ratio") 


 # }