On Mon, Mar 14, 2011 at 1:06 PM, Pavan G <pavan.n...@gmail.com> wrote: > Hello All, > I have a histogram with values above and below 0. I would like to color the > +ve bars green and -ve bars red. I am plotting data using: > > hist(a[,2],breaks=100,main="W3",xlab="Movement towards site (A)") > > Can someone please comment on how it can be done? > Thanks!
See help(hist). The argument "border" lets you color the outline of the bars. You can use, for example, this code: h = hist(a[,2],breaks=100) bor = ifelse(h$mids < 0, "red", "green"); plot(h, border = bor, main="W3",xlab="Movement towards site (A)") Example with random data: h = hist(rnorm(1000),breaks=100) bor = ifelse(h$mids < 0, "red", "green"); plot(h, border = bor, main="W3",xlab="Movement towards site (A)") HTH, Peter ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
