[R] 'beside' option for boxplots

[ONKELINX, Thierry]

Dear Malcom,

Another option is to merge both dataset to one big dataset and then plot
the big dataset.

d1 <- data.frame(a = c(rep(1:3, each = 3)), b = c(1:9), d = "A")
d2 <- data.frame(a = c(rep(1:3, each = 3)), b = c(9:1), d = "B")
Dataset <- rbind(d1, d2)
library(ggplot2)
Dataset$a <- factor(Dataset$a)
ggplot(Dataset, aes(x = a, y = b, colour = d)) + geom_boxplot()

HTH,

Thierry

------------------------------------------------------------------------
----
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature
and Forest
Cel biometrie, methodologie en kwaliteitszorg / Section biometrics,
methodology and quality assurance
Gaverstraat 4
9500 Geraardsbergen
Belgium
tel. + 32 54/436 185
Thierry.Onkelinx at 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

-----Oorspronkelijk bericht-----
Van: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
Namens Uwe Ligges
Verzonden: donderdag 4 juni 2009 13:45
Aan: Malcolm Ryan
CC: r-help at r-project.org
Onderwerp: Re: [R] 'beside' option for boxplots

Example:

boxplot(d1$b ~ d1$a, pars = list(boxwex = 0.15), at=c(1:3 - 0.1),
xaxt="n") boxplot(d2$b ~ d2$a, add=T, pars = list(boxwex = 0.15),
at=c(1:3 + 0.1),
xaxt="n")
axis(1, at=1:3)

Uwe

Malcolm Ryan wrote:
> Is there any way to get a boxplot of several data sets beside one 
> another on the same graph, as there is for barplot?
> 
> If I do:
> 
> d1 <- data.frame(a = c(rep(1:3, each = 3)), b = c(1:9))
> d2 <- data.frame(a = c(rep(1:3, each = 3)), b = c(9:1)) boxplot(d1$b ~

> d1$a) boxplot(d2$b ~ d2$a, add=T)
> 
> It will show the two datasets on the one graph, but the middle point 
> will overlap.
> 
> What I want is a layout more like:
> 
> barplot(t(matrix(c(d1$b, d2$b), ncol=2)), beside=T)
> 
> only showing the boxes from the plot above instead of bars.
> 
> Can this be done?
> 
> Malcolm
> 
> ______________________________________________
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> and provide commented, minimal, self-contained, reproducible code.

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