legendGradLines: Legend for Graduated Size Lines Maps

In cartography: Thematic Cartography

Legend for Graduated Size Lines Maps

Description

Plot legend for graduated size lines maps.

Usage

legendGradLines(
  pos = "topleft",
  title.txt = "Title of the legend",
  title.cex = 0.8,
  cex = 1,
  values.cex = 0.6,
  breaks,
  lwd,
  col,
  values.rnd = 2,
  frame = FALSE
)

Arguments

pos	position of the legend, one of "topleft", "top", "topright", "right", "bottomright", "bottom", "bottomleft", "bottomleftextra", "left" or a vector of two coordinates in map units (c(x, y)).
title.txt	title of the legend.
title.cex	size of the legend title.
cex	size of the legend. 2 means two times bigger.
values.cex	size of the values in the legend.
breaks	break points in sorted order to indicate the intervals for assigning the width of the lines
lwd	a vector giving the width of the lines.
col	color of symbols.
values.rnd	number of decimal places of the values in the legend.
frame	whether to add a frame to the legend (TRUE) or not (FALSE).

Examples

library(sf)
mtq <- st_read(system.file("gpkg/mtq.gpkg", package="cartography"))
plot(st_geometry(mtq))
box()
legendGradLines(title.txt = "Title of the legend", 
                pos = "topright",
                title.cex = 0.8,
                values.cex = 0.6, breaks = c(1,2,3,4,10.2,15.2),
                lwd = c(0.2,2,4,5,10),
                col ="blue", values.rnd =2)

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