createColorBar: Create a color bar

In cydar: Using Mass Cytometry for Differential Abundance Analyses

Description

A convenience function to create a color bar on the current graphics device.

Usage

createColorBar(colors, top.text=NULL, bottom.text=NULL, 
    lower=-0.5, upper=0.5, x.pos=0, width=1, cex=1.5) 

Arguments

colors	A character vector of colors to be used in successive steps of the color bar, from bottom to top.
top.text	String containing the label to be placed at the top of the color bar.
bottom.text	String containing the label to be placed at the bottom of the color bar.
lower	Numeric scalar specifying the bottom y-coordinate of the color bar.
upper	Numeric scalar specifying the top y-coordinate of the color bar.
x.pos	Numeric scalar specifying the x-coordinate of the middle of the color bar.
width	Numeric scalar specifying the width of the color bar.
cex	Numeric scalar specifying the size of the text.

Details

If bottom.text or top.text are not specified, they will be take from the first and last names of colors, respectively. If no names are available, no labels will be created.

Value

A color bar is created on the current graphics device. NULL is invisibly returned.

Author(s)

Aaron Lun

Examples

plot(0,0, axes=FALSE, xlab="", ylab="")
createColorBar(heat.colors(100), "High", "Low")

cydar documentation built on April 17, 2021, 6:01 p.m.