[R] 2 barplots in the same graph

From: jia ding <dingjia_at_gmail.com>
Date: Thu 23 Feb 2006 - 00:31:08 EST


Hello,

I have a very simple question about "2 barplots in the same graph".

It seems quite easy, but I searched google for long time, haven't find solution.

For example, I want one graph like:

x1=seq(0,2,by=0.3)
x2=seq(3,0,by=-0.1)
barplot(x1,col="red")
barplot(x2,col="green")

It means if it's on the same graph, some bars are overlaped. So if the bars are hollow, instead of filled with color, it will be better.

Actually, I think it's something similar with matlab's "hold on" command.

Thanks!

Nina

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