R: scalebar

scalebar {raster} | R Documentation

## 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)

[Package raster version 3.5-15 Index]