Get raster cell values

Description

getValues returns all values or the values for a number of rows of a Raster* object. Values returned for a RasterLayer are a vector. The values returned for a RasterStack or RasterBrick are always a matrix, with the rows representing cells, and the columns representing layers

values is a shorthand version of getValues (for all rows).

Usage

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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 > 0, or missing

...

Additional arguments. When x is a RasterLayer: format to specifiy the output format. Either "matrix" or, the default "", in which case a vector is returned

Value

vector or matrix of raster values

See Also

getValuesBlock, getValuesFocal, setValues

Examples

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

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