raster (version 1.0.4)

setValues: Set values

Description

Use these functions to assign values to a RasterLayer or RasterBrick object. While you can access the 'values' slot of the objects directly, you would do that at your own peril because when setting values, multiple slots need to be changed; which is what these functions do.

Usage

setValues(object, values, rownr=-1, layer=-1) 
setValuesRows(object, values, startrow, nrows) 
clearValues(object)

Arguments

object

A RasterLayer or RasterBrick object

values

Data values to associate with the RasterLayer object. There should be values for all cells or for a single row

layer

Layer number (only relevant for RasterStack objects)

rownr

Row number, between 1 and nrow(raster)

startrow

First row for which values are added

nrows

Number of rows

Value

• a Raster* object

See Also

replacement

Examples

rs <- raster(ncol=10, nrow=10)
vals <- 1:ncell(rs)
rs <- setValues(rs, vals)
rs <- clearValues(rs)
rowvals <- 1:ncol(rs)
rs <- setValues(rs, rowvals, 3)