[R] A rebel boxplot question

[ONKELINX, Thierry]

Merge both datasets into one with a grouping variable. Then have a look
at the ggplot2 package.

  library(ggplot2)
  dataset <- data.frame(Month = factor(rep(1:12, 20)),  Value =
c(rnorm(120) + 1:12, rnorm(120) + 12:1), Group = gl(2, 120, labels =
LETTERS[1:2]))
  ggplot(dataset, aes(x = Month, y = Value, colour = Group)) +
geom_boxplot()

Cheers,

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 op inbo.be
www.inbo.be 

Do not put your faith in what statistics say until you have carefully
considered what they do not say.  ~William W. Watt
A statistical analysis, properly conducted, is a delicate dissection of
uncertainties, a surgery of suppositions. ~M.J.Moroney



> -----Oorspronkelijk bericht-----
> Van: r-help-bounces op r-project.org 
> [mailto:r-help-bounces op r-project.org] Namens p.valdes op arsystel.com
> Verzonden: donderdag 4 oktober 2007 17:40
> Aan: r-help op r-project.org
> Onderwerp: [R] A rebel boxplot question
> 
> Dear R list members
> I am trying to improve a boxplot with 2 data sets. I run 
> somethinkg like
> 
> boxplot(data1 ~ month, add=F, col = "red", ...)
> boxplot(data2 ~ month, add=T, col = "blue", ...)
> 
> The problem is that the data from February are missing for 
> data2, so R think that must take little more space between 
> the data classes in data 2 and then both data gropus are not 
> aligned. In the R documentation I do not find any posile 
> solution for tell R that I want reserve a extra space for 
> this month, So the boxplot is erroneous and the x axis have a 
> strange numeration
> 
> 1 2 3 4 54 65 76 ... etc
> 
>  I would be grateful if anyone could suggest how to tell R 
> That the boxplots must be fitted to the same x class in both 
> data groups. To make a false data group with a 0 valor for 
> february is not aceptable in this case
> 
> Sincerely
> Pablo Valdes
> 
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