tmap (version 1.0)

tm_scale_bar: Scale bar

Description

Creates a scale bar. By default, the coordinate units are assumed to be meters, and the map units in kilometers. This can be changed in tm_shape.

Usage

tm_scale_bar(breaks = NULL, size = 0.5, position = c("right", "bottom"))

Arguments

breaks

breaks of the scale bar

size

relative text size

position

position of the text. Vector of two values, specifing the x and y coordinates. Either this vector contains "left", "center" or "right" for the first value and "top", "center", or "bottom" for the second value, or this vector contains two numeric values be

Examples

data(NLD_muni)
qtm(NLD_muni) + tm_scale_bar(position=c("left", "bottom"))

data(Europe)
tm_shape(Europe, unit = "miles", unit.size=1609) + tm_polygons() + tm_scale_bar()