raster (version 1.9-13)

scalebar: scalebar

Description

Add a scalebar to a plot

Usage

scalebar(d, xy = NULL, type = "line", divs = 2, below = "", lonlat = NULL, labels, adj=c(0.5, -0.5), lwd = 2, ...)

Arguments

d

distance covered by scalebar

xy

x and y coordinate to place the plot. Can be NULL. Use xy=click() to make this interactive

type

"line" or "bar"

divs

Number of divisions for a bar type. 2 or 4

below

Text to go below scalebar (e.g., "kilometers")

lonlat

If not NULL, this should be the average latitude of the plot. In that case d is interpreted to be in kilometers, but the scalebar is drawn in equivalent units in degrees

adj

adjustment for text placement

labels

Vector of three numbers to label the scale bar (beginning, midpoint, end)

lwd

line width for the "line" type scalebar

...

arguments to be passed to other methods

Value

• None. Use for side effect of a scalebar added to a plot

See Also

plot

Examples

r <- raster( system.file("external/test.grd", package="raster") )
plot(r)
scalebar(1000)
scalebar(1000, xy=c(178000, 333500), type='bar', divs=4)