scalebar: scalebar

In raster: Geographic Data Analysis and Modeling

scalebar

Description

Add a scalebar to a plot

Usage

scalebar(d, xy = NULL, type = "line", divs = 2, below = "", 
       lonlat = NULL, label, 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	Logical or NULL. If logical, TRUE indicates if the plot is using longitude/latitude coordinates. If NULL this is guessed from the plot's coordinates
adj	adjustment for text placement
label	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

Author(s)

Robert J. Hijmans; partly based on a function by Josh Gray

See Also

plot

Examples

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

raster documentation built on Oct. 3, 2024, 1:08 a.m.