raster (version 1.0.4)

mask: mask

Description

Create a new RasterLayer where all cells that are NA in mask are set to NA, and that has the same values as x in the other cells.

Usage

mask(x, mask, ...)

Arguments

x

A RasterLayer object

mask

A RasterLayer object

...

Additional arguments. See below, under Methods

Value

• A new RasterLayer object, and in some cases the side effect of a new file on disk.

Methods

A full call to the mask method for a RasterLayer is: mask(x, mask, filename='', ... ) rll{ x a RasterLayer object mask a RasterLayer object filename character. output filename ... Additional arguments, see Details }

Details

If no filename is specified, and the resulting RasterLayer is too large to hold in memory, it is saved to a temporary file. The following additional arguments can be passed, to replace default values for this function rll{ format Character. Output file type. See writeRaster datatype Character. Output data type. See dataType overwrite Logical. If TRUE, "filename" will be overwritten if it exists progress Character. Valid values are "text", "tcltk", "windows" (on that platform only) and "" }

Examples

r <- raster(ncol=10, nrow=10)
m <- raster(ncol=10, nrow=10)
r[] <- runif(ncell(r)) * 10
m[] <- runif(ncell(r))
m[m <0.5] <- NA
mr <- mask(r, m)