rasterFromCells: Subset a raster by cell numbers

In raster: Geographic Data Analysis and Modeling

Subset a raster by cell numbers

Description

This function returns a new raster based on an existing raster and cell numbers for that raster. The new raster is cropped to the cell numbers provided, and, if values=TRUE has values that are the cell numbers of the original raster.

Usage

rasterFromCells(x, cells, values=TRUE)

Arguments

x	Raster* object (or a SpatialPixels* or SpatialGrid* object)
cells	vector of cell numbers
values	Logical. If TRUE, the new RasterLayer has cell values that correspond to the cell numbers of x

Details

Cell numbers start at 1 in the upper left corner, and increase from left to right, and then from top to bottom. The last cell number equals the number of cells of the Raster* object.

Value

RasterLayer

See Also

rowFromCell

Examples

r <- raster(ncols=100, nrows=100)
cells <- c(3:5, 210)
r <- rasterFromCells(r, cells)
cbind(1:ncell(r), getValues(r))

raster documentation built on Oct. 3, 2024, 1:08 a.m.