raster (version 1.6-10)

getValues: Get raster cell values

Description

getValues returns all values or a row of values for a Raster* object. It will take them from memory if available, else it will read them from disk. This is the prefered function to get either all values, or a subset of rows from a RasterLayer (it is safer then read* functions, which will fail if there is no file). Function values is a shorthand version of getValues that might eventually replace getValues.

Usage

getValues(x, row, nrows, ...)
values(x, ...)

Arguments

x

Raster* object

row

Numeric. Row number, should be between 1 and nrow(x), or missing in which case all values are returned

nrows

Numeric. Number of rows. Should be an integer number > 0, or missing

...

Additional arguments, see Details

Value

• vector or matrix of raster values

Details

Additional arguments when x is a RasterLayer: format Character. specifiy the output format. Either '' or 'matrix'. The default is '', in which case a vector is returned. The values returned for a RasterStack or RasterBrick are always a matrix.

Examples

r <- raster(system.file("external/test.grd", package="raster"))
getValues(r)
getValues(r, row=10)

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