Dear Tom, You can’t do that with facet_grid() or facet_wrap(). You could try combine several plots with grid.arrange().
p1 <- ggplot(subset(data, group == "a"),aes(x=x,y=y))+geom_point(aes(color=group))+facet_wrap(~id, nrow = 1) + scale_colour_discrete(drop = FALSE) p2 <- ggplot(subset(data, group == "b"),aes(x=x,y=y))+geom_point(aes(color=group))+facet_wrap(~id, nrow = 1) + scale_colour_discrete(drop = FALSE) p3 <- ggplot(subset(data, group == "c"),aes(x=x,y=y))+geom_point(aes(color=group))+facet_wrap(~id, nrow = 1) + scale_colour_discrete(drop = FALSE) library(gridExtra) grid.arrange(p1, p2, p3) If those solutions are not good enough, then you'll need to craft it in grid. Or look at the source code of ggplot2 and change that to get what you want. Best regards, ir. Thierry Onkelinx Instituut voor natuur- en bosonderzoek / Research Institute for Nature and Forest team Biometrie & Kwaliteitszorg / team Biometrics & Quality Assurance Kliniekstraat 25 1070 Anderlecht Belgium + 32 2 525 02 51 + 32 54 43 61 85 thierry.onkel...@inbo.be www.inbo.be To call in the statistician after the experiment is done may be no more than asking him to perform a post-mortem examination: he may be able to say what the experiment died of. ~ Sir Ronald Aylmer Fisher The plural of anecdote is not data. ~ Roger Brinner The combination of some data and an aching desire for an answer does not ensure that a reasonable answer can be extracted from a given body of data. ~ John Tukey Van: Tom Wright [mailto:t...@maladmin.com] Verzonden: woensdag 7 januari 2015 15:43 Aan: ONKELINX, Thierry CC: R. Help Onderwerp: Re: [R] ggplot with sparse layout Thanks, this is pretty good. Unfortunately I made an error in generating the sample dataframe, this code better represents the situation: data<-data.frame(id=factor(rep(1:6,each=3)), group=factor(rep(c('a','a','b','c','c','c'),each=3)), x=runif(18,0,10), y=rnorm(18,0,1)) I would like the first row to contain plots for id=1 & id=2, the second row plots for id=3 and the third row for id=4:6 On Tue, Jan 6, 2015 at 5:58 PM, ONKELINX, Thierry <thierry.onkel...@inbo.be> wrote: Dear Tom, Does ggplot(data,aes(x=x,y=y))+geom_point(aes(color=group))+facet_wrap(~group + id) gives what you need? Note that facet_grid by design aligns the subplots into rows and columns with the same level. Best regards, ir. Thierry Onkelinx Instituut voor natuur- en bosonderzoek / Research Institute for Nature and Forest team Biometrie & Kwaliteitszorg / team Biometrics & Quality Assurance Kliniekstraat 25 1070 Anderlecht Belgium + 32 2 525 02 51 + 32 54 43 61 85 thierry.onkel...@inbo.be www.inbo.be To call in the statistician after the experiment is done may be no more than asking him to perform a post-mortem examination: he may be able to say what the experiment died of. ~ Sir Ronald Aylmer Fisher The plural of anecdote is not data. ~ Roger Brinner The combination of some data and an aching desire for an answer does not ensure that a reasonable answer can be extracted from a given body of data. ~ John Tukey ________________________________________ Van: R-help [r-help-boun...@r-project.org] namens Tom Wright [t...@maladmin.com] Verzonden: dinsdag 6 januari 2015 22:13 Aan: R. Help Onderwerp: [R] ggplot with sparse layout Hi, I would like to plot the following data such that each plot represents the data from a single id and the plots are grouped according to the group variable. data<-data.frame(id=factor(rep(1:6,each=3)), group=factor(c('a','a','b','c','c','c')), x=runif(18,0,10), y=rnorm(18,0,1)) The following ggplot nearly works but I would prefer to not plot the missing combinations, i.e. each row will be a different length. ggplot(data,aes(x=x,y=y))+geom_point(aes(color=group))+facet_grid(group~id) Is this possible using ggplot or will I need to craft something using grid? Thanks for any ideas. Tom [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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. Disclaimer<https://drupal.inbo.be/nl/disclaimer-mailberichten-van-het-inbo> Disclaimer<https://drupal.inbo.be/nl/disclaimer-mailberichten-van-het-inbo> ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
