Rasterization of geometric properties of vector data. You can get the count of the number of geometries in each cell; the area covered by polygons; the length of the lines; or the number of lines that cross the boundary of each cell. See
rasterize for standard rasterization (of attribute values associated with geometries).
The area of polygons is intended for summing the area of polygons that are relatively small relative to the raster cells, and for when there may be multiple polygons per cell. See
rasterize(fun="sum") for counting large polygons and
rasterize(cover=TRUE) to get the fraction that is covered by larger polygons.
# S4 method for SpatVector,SpatRaster rasterizeGeom(x, y, fun="count", unit="m", filename="", ...)
character. "count", "area", "length", or "crosses"
character. "m" or "km"
character. Output filename
additional arguments for writing files as in
f <- system.file("ex/lux.shp", package="terra") v <- vect(f) r <- rast(v, res=.1) # length of lines lns <- as.lines(v) x <- rasterizeGeom(lns, r, fun="length", "km") # count of points set.seed(44) pts <- spatSample(v, 100) y <- rasterizeGeom(pts, r) # area of polygons pols <- buffer(pts, 1000) z <- rasterizeGeom(pols, r, fun="area")