Calculate a buffer around all cells that are not
NA or around SpatialPoints, Lines, or Polygons.
Note that the distance unit of the buffer
width parameter is meters if the RasterLayer is not projected (
+proj=longlat), and in map units (typically also meters) when it is projected.
# S4 method for RasterLayer buffer(x, width=0, filename='', doEdge=FALSE, ...) # S4 method for Spatial buffer(x, width=1, dissolve=TRUE, ...)
RasterLayer or Spatial* object
numeric > 0. Unit is meter if
x has a longitude/latitude CRS, or mapunits in other cases
character. Filename for the output RasterLayer (optional)
boundaries function is called first. This may be efficient in cases where you compute a buffer around very large areas because
boundaries determines the edge cells that matter for distance computation
TRUE, buffer geometries of overlapping polygons are dissolved and all geometries are aggregated and attributes (the data.frame) are dropped
Additional arguments as for
RasterLayer or SpatialPolygons* object