[R] barplot colors

[David L Carlson]

You will have to trick barplot into thinking you have four groups:

> wmod <- cbind(c(w[,1], 0, 0), c(0, 0, w[,2]))
> barplot(wmod, main="2012", col=c("red", "green", "blue", "pink"))

----------------------------------------------
David L Carlson
Associate Professor of Anthropology
Texas A&M University
College Station, TX 77843-4352



> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of Francois de Ryckel
> Sent: Tuesday, March 26, 2013 1:09 PM
> To: r-help at r-project.org
> Subject: [R] barplot colors
> 
> Dear all,
> 
> I have a 2 by 2 matrix and I would like to do a barplot with it.  (so 2
> bars with each having 2 stacks.).  I would like to have one colors per
> stack, so 4 different colors total.
> The problem is that R is only given me 2 colors (the same two for the
> bottom stack and the same two for the top stack).  Any idea how I can
> do to have 4 colors? (without using ggplot2 preferably)
> Here is my code
> 
> > w <- matrix(table(cutMF12G3),2,2)
> > w
>      [,1] [,2]
> [1,]    8   13
> [2,]    8    8
> 
> > barplot(w, main="2012", col=c("red", "green", "blue", "pink"))
> 
> Thanks in advance for your help.
> 
> Frangois
> 
> 
> 
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