Create a color scale

Simple and flexible color scale.

colorScale(
  x,
  y,
  col,
  at = NULL,
  labels = NULL,
  horiz = TRUE,
  percx = NULL,
  percy = NULL,
  adj = 0,
  labels.cex = 1,
  title = "legend",
  title.cex = 1.2
)

Arguments

x	x-coordinates of the bottom-left corner of the legend.
y	y-coordinates of the bottom-left corner of the legend.
col	vector of colors.
at	vector of integers indicating colors to be labeled.
labels	labels.
horiz	a logical. Should the color scale be horizontal?
percx	size of the color scale along x axis.
percy	size of the color scale along y axis.
adj	adjust the position labels position. If adj = 0 then labels are at the bottom if horiz = TRUE and on the the left if horiz = FALSE. If adj = 1, labels are at the top if horiz = TRUE and on the the right if horiz = FALSE. So far if horiz = TRUE, title and labels are on opposite sides.
labels.cex	magnification to be used for labels.
title	legend title.
title.cex	magnification to be used for the title.

Examples

plot(c(0,10), c(0,10))
colorScale(5, 5, gpuPalette("cisl", 10), at = c(2, 4))