image function

Image

Create an "image" type plot of a RasterLayer. This is an implementation of a generic function in the graphics package. In most cases the plot function would be preferable because it produces a legend (and has some additional options). methods

image(x, ...) 
## S4 method for signature 'RasterLayer'
image(x, maxpixels=500000, useRaster=TRUE, ...)

## S4 method for signature 'RasterStackBrick'
image(x, y=1, maxpixels=100000, useRaster=TRUE, main, ...)

Arguments

• x: Raster* object
• maxpixels: integer > 0. Maximum number of cells to use for the plot. If maxpixels < ncell(x), sampleRegular is used before plotting
• useRaster: If TRUE, the rasterImage function is used for plotting. Otherwise the image function is used. This can be useful if rasterImage does not work well on your system (see note)
• main: character. Main plot title
• ...: Any argument that can be passed to image (graphics package)
• y: If x is a RasterStack or RasterBrick: integer, character (layer name(s)), or missing to select which layer(s) to plot

See Also

plot, image, contour

Note

raster uses rasterImage from the graphics package. For unknown reasons this does not work on Windows Server and on a few versions of Windows XP. On that system you may need to use argument useRaster=FALSE to get a plot.

Examples

r <- raster(system.file("external/test.grd", package="raster"))
image(r)