barscale: Scale Bar

In cartography: Thematic Cartography

Scale Bar

Description

Plot a scale bar.

Usage

barscale(
  size,
  lwd = 1.5,
  cex = 0.6,
  pos = "bottomright",
  style = "pretty",
  unit = "km"
)

Arguments

size	size of the scale bar in units (default to km). If size is not set, an automatic size is used (1/10 of the map width).
lwd	width of the scale bar.
cex	cex of the text.
pos	position of the legend, default to "bottomright". "bottomright" or a vector of two coordinates (c(x, y)) are possible.
style	style of the legend, either "pretty" or "oldschool". The "oldschool" style only uses the "size" parameter.
unit	units used for the scale bar. Can be "mi" for miles, "m" for meters, or "km" for kilometers (default)

Note

This scale bar is not accurate on unprojected (long/lat) maps.

See Also

layoutLayer

Examples

library(sf)
mtq <- st_read(system.file("gpkg/mtq.gpkg", package="cartography"))
plot(st_geometry(mtq), col = "grey60", border = "grey20")
barscale(size = 5)
barscale(size = 5, lwd = 2, cex = .9, pos = c(714000, 1596000))

cartography documentation built on Sept. 14, 2023, 5:08 p.m.