colorbar: Vertical color bar

In graphx: Graphics Routines for Scientific Research

Description

Adds a vertical color bar to a plot with a custom axis.

Usage

colorbar(
  xleft,
  ybottom,
  xright,
  ytop,
  col = gray.colors(256, 0, 1),
  n = length(col),
  clim = c(0, 1),
  show.border = TRUE,
  text = "",
  line = 2,
  show.axis = TRUE,
  side = "right",
  lwd = 1,
  nticks = 5,
  at = NULL,
  ...
)

Arguments

xleft	left x-coordinate of the bar
ybottom	bottom y-coordinate of the bar
xright	right x-coordinate of the bar
ytop	top y-coordinate of the bar
col	vector of colors
n	number of polygons used to draw the bar
clim	2-vector specifying the range of values, linearly represented by the full color scale
show.border	logical flag specifying whether to draw a rectangular border around the bar
text	axis label
line	distance between label and color bar
show.axis	logical flag specifying whether to draw an axis
side	character string, which specifies the location of the axis on the bar. This has to be 'left' or 'right' (default).
lwd	linewidth of border and ticks
nticks	number of ticks on the axis
at	vector of values specifying the tick positions on the axis, this overrides nticks.
...	optional arguments to be passed to the function axis

Value

None

Author(s)

Danail Obreschkow

Examples

## Plot a spherical function with color bar
nplot(xlim=c(0,1.2), asp=1)
f = function(theta,phi) cos(10*theta+phi)
sp = sphereplot(f, 200, col=planckcolors(200), phi0=0.1, theta0=pi/3,
add=TRUE, center=c(0.5,0.5), radius=0.4, clim=c(-1,1))
colorbar(1,0.1,1.1,0.9,col=sp$col,clim=sp$clim)

graphx documentation built on Feb. 3, 2022, 5:07 p.m.