raster (version 2.5-8)

cellsFromExtent: Cells from Extent

Description

This function returns the cell numbers for a Raster* object that are within a specfied extent (rectangular area), supply an object of class Extent, or another Raster* object.

Usage

cellsFromExtent(object, extent, expand=FALSE)

Arguments

object

A Raster* object

extent

An object of class Extent (which you can create with newExtent(), or another Raster* object )

expand

Logical. If TRUE, NA is returned for (virtual) cells implied by bndbox, that are outside the RasterLayer (object). If FALSE, only cell numbers for the area where object and bndbox overlap are returned (see intersect)

Value

a vector of cell numbers

See Also

extent, cellFromXY

Examples

# NOT RUN {
r <- raster()
bb <- extent(-5, 5, -5, 5)
cells <- cellsFromExtent(r, bb)
r <- crop(r, bb)
r[] <- cells
# }