Hi Martin, As Sarah said, I do not know of any way to "change the default", but you can certainly do it manually each time. Here is an example:
## generate some data set.seed(10) x <- rnorm(101) ## store boxplot results s <- boxplot(x, plot = FALSE) ## look at them s ## replace the stats with lower and upper quartile s$stats[c(2, 4), 1] <- quantile(x, c(.25, .75), TRUE, type = 7) ## plot updated boxplot bxp(s) That said, you will still have to pick what algorithm you want for your quartiles. This demonstrates the nine algorithms: t(sapply(1:9, function(i) quantile(x, c(.25, .75), TRUE, type = i))) You can find their specific details in the article: Hyndman, R. J., & Fan, Y. (1996). Sample Quantiles in Statistical Packages. The American Statistician, 50(4), 361 - 365. Hope this helps, Josh On Fri, Jul 29, 2011 at 4:39 AM, Martin Olofsson <martin.olofs...@zoologi.su.se> wrote: > Hi! > > My name is Martin and I have a problem concerning the boxplot function in R. > I want my boxes to be limited by the 1st and 3rd quartile and NOT the > 'hinges' values that are the default setting in R. > Do anyone knows if there is any command that I could do to change this > default setting? > > Sincerely > > Martin Olofsson > > ______________________________________________ > 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. > -- Joshua Wiley Ph.D. Student, Health Psychology University of California, Los Angeles https://joshuawiley.com/ ______________________________________________ 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.