kissmigOrigin is a support function to define the geographic origin for a kissmig call.
Usage
kissmigOrigin(grd, x, y, size)
Arguments
grd
a single RasterLayer as reference layer
x
lower left x-coordinate of geographic origin
y
lower left y-coordinate of geographic origin
size
size of the quadratic origin
Details
kissmigOrigin returns a rasterLayer characterized by the reference
grd. Cell values are set to zero, except for cells of the origin defined by
extent(x, x+size, y, y+size) which are set to one.