R: Replace cell values or layers of a Raster* object

replacement {raster} | R Documentation

## Replace cell values or layers of a Raster* object

### Description

You can set values of a Raster* object, when `i` is a vector of cell numbers, a Raster*, Extent, or Spatial* object.

These are shorthand methods that work best for relatively small Raster* objects. In other cases you can use functions such as `calc and rasterize`.

### Methods

`x[i] <- value`

`x[i,j] <- value`

| Arguments: |
| `x` | a Raster* object
| `i` | cell number(s), row number(s), Extent, Spatial* object
| `j` | columns number(s) (only available if i is (are) a row number(s))
| `value` | new cell value(s)

### See Also

calc, rasterize

### Examples

    r <- raster(ncol=10, nrow=5)
    values(r) <- 1:ncell(r) * 2
    r[1,] <- 1
    r[,1] <- 2
    r[1,1] <- 3

    s <- stack(r, sqrt(r))
    s[s<5] <- NA

[Package raster version 3.5-15 Index]