I don't think I was clear. Sorry. What I was refering to was the ggplot(ddf, aes(x, y, colour=grp)) + geom_boxplot() + geom_point(aes(ymax=max(y)), position = position_dodge(width=.75))
which is giving me http://www.mediafire.com/i/?fdurpq6e6l8cu35 which was what I though you want. I have no idea how the x axis points on the boxplot are determined. It may be relatively clear in the code but I don't really have the knowledge to ferret it out. Sorry that I cannot be of more help. John Kane Kingston ON Canada > -----Original Message----- > From: thorn.tha...@rdls.nestle.com > Sent: Mon, 2 Jul 2012 15:10:33 +0200 > To: jrkrid...@inbox.com, r-help@r-project.org > Subject: RE: [R] ggplot: dodge positions > > 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 >> >> ____________________________________________________________ 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.
