kissmigOrigin is a support function to define a rectangular origin for a kissmig call.
kissmigOrigin(grd, x, y, size)SpatRaster with one layer as reference.
integer as lower left x-coordinate of geographic origin.
integer as lower left y-coordinate of geographic origin.
number as size of the quadratic origin.
kissmigOrigin returns a SpatRaster with one layer characterized by the reference
grd. Cell values are set to 0, except for cells of the origin defined by
ext(x, x+size, y, y+size) which are set to 1.
kissmig