Try something like this (modify to how you like it): x <- runif(100) y <- rnorm(100, 5, 2) y[1:3] <- c(19, 21, 50)
layout(matrix( 3:1, ncol=1 ), heights=c(2,3,4)) par(mar=c(5,4,0,2)+0.1) plot(x,y, ylim=c(0,10), ylab='') par(mar=c(0.5,4,0,2)+0.1) plot(x,y, ylim=c(18,22), xlab='', xaxt='n' ) axis(1, labels=FALSE) par(mar=c(0.5,4,4,2)+0.1) plot(x,y, ylim=c(49,51),xlab='', main='my title', xaxt='n', ylab='' ) axis(1, labels=FALSE) -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare [EMAIL PROTECTED] (801) 408-8111 > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Inman, > Brant A. M.D. > Sent: Thursday, April 12, 2007 12:41 PM > To: [EMAIL PROTECTED] > Subject: [R] Putting 2 breaks on Y axis > > > R plotting experts: > > I have a bivariate dataset composed of 300 (x,y) continuous > datapoints. > 297 of these points are located within the y range of [0,10], > while 2 are located at 20 and one at 55. No coding errors, > real outliers. > > When plotting these data with a scatterplot, I obviously have > a problem. > If I plot the full dataset with ylim = c(0,55), then I cannot > see the structure in the data in the [0, 10] range. If I > truncate the y axis with ylim = c(0,10), then I cannot see > the 3 outliers. If I break the y axis from 10 to 20 (using > plotrix functions), I still do not see the data optimally > because of the white space from y=20 to y=55. > > What I would like to do is break the y axis at 2 points, > roughly 10-20 and 20-55. Is there a function that can break > an axis in 2 places? > > Thanks in advance for any suggestions. > > Brant > > ______________________________________________ > [EMAIL PROTECTED] 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. > ______________________________________________ [EMAIL PROTECTED] 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.
