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RGB

Create a Red-Green-Blue Raster object

Description

Make a Red-Green-Blue object that can be used to create images.

Usage

## S4 method for signature 'RasterLayer'
RGB(x, filename='', col=rainbow(25), breaks=NULL, alpha=FALSE, 
		colNA='white', zlim=NULL, zlimcol=NULL, ext=NULL, ...)

Arguments

x

RasterLayer
filename

character. Output filename (optional)
col

A color palette, that is a vector of n contiguous colors generated by functions like rainbow, heat.colors, topo.colors, bpy.colors or one or your own making, perhaps using colorRampPalette. If none is provided, rev(terrain.colors(255)) is used unless x has a 'color table'
breaks

numeric. A set of finite numeric breakpoints for the colours: must have one more breakpoint than colour and be in increasing order
alpha

If TRUE a fourth layer to set the background transparency is added
colNA

color for the background (NA values)
zlim

vector of lenght 2. Range of values to plot
zlimcol

If NULL the values outside the range of zlim get the color of the extremes of the range. If zlimcol has any other value, the values outside the zlim range get the color of NA values (see colNA)
ext

An Extent object to zoom in to a region of interest (see drawExtent)
...

additional arguments as for writeRaster

Value

RasterBrick

See Also

Examples

r <- raster(system.file("external/test.grd", package="raster"))
x <- RGB(r)
plot(x, col=gray(0:9/10))
plotRGB(x)
raster

Geographic Data Analysis and Modeling

v3.4-10
GPL (>= 3)
Authors
Robert J. Hijmans [cre, aut] (<https://orcid.org/0000-0001-5872-2872>), Jacob van Etten [ctb], Michael Sumner [ctb], Joe Cheng [ctb], Dan Baston [ctb], Andrew Bevan [ctb], Roger Bivand [ctb], Lorenzo Busetto [ctb], Mort Canty [ctb], Ben Fasoli [ctb], David Forrest [ctb], Aniruddha Ghosh [ctb], Duncan Golicher [ctb], Josh Gray [ctb], Jonathan A. Greenberg [ctb], Paul Hiemstra [ctb], Kassel Hingee [ctb], Institute for Mathematics Applied Geosciences [cph], Charles Karney [ctb], Matteo Mattiuzzi [ctb], Steven Mosher [ctb], Babak Naimi [ctb], Jakub Nowosad [ctb], Edzer Pebesma [ctb], Oscar Perpinan Lamigueiro [ctb], Etienne B. Racine [ctb], Barry Rowlingson [ctb], Ashton Shortridge [ctb], Bill Venables [ctb], Rafael Wueest [ctb]
Initial release
2021-05-02

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