RStoolbox (version 0.1.1)

rescaleImage: Linear image rescaling

Description

performs linear shifts of value ranges either to match min and max of another image or to any other min and max value.

Usage

rescaleImage(x, y, xmin, xmax, ymin, ymax, forceMinMax = FALSE)

Arguments

x

Raster* object. Image to normalise.

y

Raster* object. Reference image.

xmin

Numeric. Min value of x.

xmax

Numeric. Max value of x.

ymin

Numeric. Min value of y.

ymax

Numeric. Max value of y.

forceMinMax

Logical. Forces update of min and max data slots in x or y.

Value

• Returns a Raster* object of the same dimensions as the input raster x but shifted and stretched to the new limits.

See Also

histMatch

Examples

## Create example data
data(lsat)
lsat2 <- lsat - 1000
lsat2

## Rescale lsat2 to match original lsat value rang
lsat2_rescaled <- rescaleImage(lsat2, lsat)
lsat2_rescaled

## Rescale lsat to value range [0,1]
lsat2_unity <- rescaleImage(lsat2, ymin = 0, ymax = 1)
lsat2_unity