Add an AQI Legend to a Map — addAQILegend • PWFSLSmoke

This function is a convenience wrapper around graphics::legend(). It will show the AQI colors and names by default if col and legend are not specified.

addAQILegend(
  x = "topright",
  y = NULL,
  col = rev(AQI$colors),
  legend = rev(AQI$names),
  pch = 16,
  title = "Air Quality Index",
  ...
)

Arguments

x	x coordinate passed on to the `legend()` command
y	y coordinate passed on to the `legend()` command
col	the color for points/lines in the legend
legend	a character vector to be shown in the legend
pch	plotting symbols in the legend
title	title for the legend
...	additional arguments to be passed to `legend()`