image: Image

In raster: Geographic Data Analysis and Modeling

Description

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).

Usage

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

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.

See Also

plot, image, contour

Examples

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

raster documentation built on Jan. 5, 2021, 3:01 a.m.