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

In raster: Geographic Data Analysis and Modeling

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

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