raster (version 3.0-7)

stretch: Stretch

Description

Linear stretch of values in a Raster object

Usage

# S4 method for Raster
stretch(x, minv=0, maxv=255, minq=0, maxq=1, filename='', ...)

Arguments

x

Raster object

minv

numeric >= 0 and smaller than maxv. lower bound of streched value

maxv

numeric <= 255 and larger than maxv. upper bound of streched value

minq

numeric >= 0 and smaller than maxq. lower quitile bound of original value

maxq

numeric <= 1 and larger than minq. upper quitile bound of original value

filename

character. Filename for the output Raster object (optional)

...

additional arguments as for writeRaster

Value

Raster

See Also

stretch argument in plotRGB

Examples

# NOT RUN {
r <- raster(nc=10, nr=10)
values(r) <- 1:100 * 10
stretch(r)
s <- stack(r, r*2)
stretch(s)

# }

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