The barplot solution already presented is probably what you want but just in case here is a zoo solution:
library(zoo) z <- merge(zoo(x2), zoo(x1, seq(x1)+.5)) plot(z, type = "h", plot.type = "single", col = 1:2, lwd = 5) Or a similar solution without zoo: plot(c(x1, x2) ~ c(seq(x1)+.5, seq(x2)), col = c(1+0*x1, 2+0*x2), type = "h", lwd = 5) On 2/22/06, jia ding <[EMAIL PROTECTED]> wrote: > 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 > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html