Draw a Custom Legend Bar — cscl • gbif.range

Internal plotting helper adapted from Philipp Brun.

Usage

cscl(
  colors,
  crds,
  horiz = FALSE,
  zrng = c(0, 100),
  at = 10 * 0:10,
  labs = NA,
  tickle = 0.2,
  title = 1,
  lablag = 1,
  titlag = 2,
  box = TRUE,
  breaks,
  cx = 0.8,
  tria = "n"
)

Arguments

colors: Vector of fill colors.
crds: Numeric vector of length four giving the plotting coordinates of the legend box.
horiz: Logical. Should the legend be drawn horizontally?
zrng: Numeric vector of length two giving the value range represented by the legend.
at: Numeric values at which tick marks should be drawn.
labs: Optional labels for at. If NA, at is used.
tickle: Numeric tick-mark length scaling factor.
title: Legend title.
lablag: Numeric offset multiplier for tick labels.
titlag: Numeric offset multiplier for the title.
box: Logical. Should a border be drawn around the legend?
breaks: Optional custom break points. Must have length length(colors) + 1 if supplied.
cx: Numeric text expansion factor.
tria: Character flag controlling triangular tips at the legend ends.