Try this, qplot(factor(0), mpg, data=mtcars, geom="boxplot", xlab="")+ coord_flip() + scale_x_discrete(breaks=NA)
HTH, baptiste On 18 June 2010 16:47, Jacob Wegelin <jacobwege...@fastmail.fm> wrote: > > In ggplot2, I would like to make a boxplot that has the following > properties: > > (1) Contrary to default, the meaningful axis should be the horizontal axis. > > Lattice does this, for instance, by > > library(lattice);bwplot(~mtcars$mpg) > > (2) It is *univariate*, i.e., of a single vector, say mtcars$mpg. I do not > wish to make separate plots for the different values of mtcars$cyl. > > (3) Nothing on the meaningless axis--the axis that does not correspond to > values of mtcars$mpg, the axis which by default is horizontal--should > suggest a scale. Thus, there should be no axis title or label; there should > be no axis ticks. > > Partial solutions: > > To achieve (1), one might save a vertical plot (with mpg on the y-axis) as a > pdf and use Adobe Acrobat to rotate it 90 degrees. But is there not a way to > do this *within* ggplot2? > > Since ggplot2 has been carefully thought out starting with the grammar of > graphics, I wonder if there is some conceptual argument against making > univariate boxplots and against boxplots with a horizontal continuous axis. > > But in teaching an introductory statistics course, I would like to compare > the ways that a histogram and a boxplot summarize a single continuous > variable. Thus I would like the continuous axis to be horizontal in both > plots. > > The following code achieves (2) and part of (3): > > library(ggplot2) > > qplot(factor(0), mpg, data=mtcars, geom="boxplot", xlab="")+ > opts(axis.text.x = theme_blank(), axis.ticks=theme_blank()) > > but to remove the ticks from the meaningless (horizontal) axis I had to also > remove the ticks from the meaningful (vertical) axis. On page 143 of > Wickham's ggplot2 book, I find axis.ticks as a theme element but nothing > like axis.ticks.x. > > Is there a way to remove the axis ticks from the x axis and not from the y > axis? > > But, more important: How do I make a boxplot that is rotated (or transposed) > from the default, so that the x axis carries the information? > > Thanks > > Jacob A. Wegelin > Assistant Professor > Department of Biostatistics > Virginia Commonwealth University > 730 East Broad Street Room 3006 > P. O. Box 980032 > Richmond VA 23298-0032 > U.S.A. > > ______________________________________________ > 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. > ______________________________________________ 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.
