legend: add a custom legend

In terra: Spatial Data Analysis

add a custom legend

Description

Wrapper around legend that allows adding a custom legend to a map using a keyword such as "topleft" or "bottomright". This function will place the legend in the locations within the mapped area as delineated by the axes.

Usage

add_legend(x, y, ...)

Arguments

x	The keyword to be used to position the legend (or the x coordinate)
y	The y coordinate to be used to position the legend (is x is also a coordinate)
...	arguments passed to legend

See Also

add_box, add_grid, add_mtext

Examples

v <- vect(system.file("ex/lux.shp", package="terra"))
plot(v)
points(centroids(v), col="red")
legend("topleft", legend = "centroids", pch = 20, xpd=NA, bg="white", col="red")
add_legend("topright", legend = "centroids", pch = 20, col="red")

terra documentation built on Oct. 14, 2024, 5:07 p.m.