R: Subset a raster by cell numbers

rasterFromCells {raster} | R Documentation

## 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))

[Package raster version 3.3-7 Index]