I guess it works with ggplot but not with ggplot2. I'm using only the latter but had a typo in my first post. So the code (which does not do what I want) is:
library(ggplot2) ddf <- data.frame(x=factor(rep(LETTERS[1:4], each=30)), y = runif(120,0,10), grp = factor(rep(rep(1:3, 10), 4))) ggplot(ddf, aes(x, y, colour=grp)) + geom_boxplot() + geom_point() Thinking of it, I would need to find out which offset ggplot uses to dodge the nested factors. If I knew the exact quantity, I could do something like geom_point(aes(x = offset.used.by.geom_boxplot)) So how are the exact positions on the x-axis for geom_boxplot determined? Any ideas? Thanks for the help, anyways. KR, -Thorn > -----Original Message----- > From: John Kane [mailto:jrkrid...@inbox.com] > Sent: Montag, 2. Juli 2012 15:04 > To: Thaler,Thorn,LAUSANNE,Applied Mathematics; r-help@r-project.org > Subject: RE: [R] ggplot: dodge positions > > Can you expand a bit on what is wrong with the dodge option? From what > I see it looks lovely witht the points exactly lined with the boxplots > for each group but perhaps I don't understand exactly what you want . > > > > John Kane > Kingston ON Canada > > > > -----Original Message----- > > From: thorn.tha...@rdls.nestle.com > > Sent: Mon, 2 Jul 2012 11:43:03 +0200 > > To: r-help@r-project.org > > Subject: [R] ggplot: dodge positions > > > > Dear all, > > > > I want to get a series of boxplots (grouped by two factors) and I > want to > > overlay the original observations and the following code does almost > what > > I want: > > > > library(ggplot) > > ddf <- data.frame(x=factor(rep(LETTERS[1:4], each=30)), y = > > runif(120,0,10), grp = factor(rep(rep(1:3, 10), 4))) > > ggplot(ddf, aes(x, y, colour=grp)) + geom_boxplot() + geom_point() > > > > Yet the position of the points and the position of the boxes on the > > x-axis is not the same. I would like that the points are shifted > > accordingly, such that they line up with the boxplots. I tried > > position_dodge: > > > > ggplot(ddf, aes(x, y, colour=grp)) + geom_boxplot() + > > geom_point(aes(ymax=max(y)), position = position_dodge(width=.75)) > > > > but that did not really help, as all points are now dodged and I just > > want to have a fixed offset for each subgroup of points such that the > > boxplot and the points are aligned. Any ideas? > > > > > > Kind Regards, > > > > Thorn Thaler > > Mathematician > > > > Applied Mathematics > > Nestec Ltd, > > Nestlé Research Center > > PO Box 44 > > CH-1000 Lausanne 26 > > Phone: +41 21 785 8220 > > Fax: +41 21 785 9486 > > ____________________________________________________________ > GET FREE SMILEYS FOR YOUR IM & EMAIL - Learn more at > http://www.inbox.com/smileys > Works with AIM®, MSN® Messenger, Yahoo!® Messenger, ICQ®, Google Talk™ > and most webmails > > ______________________________________________ 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.
