Re: [R] Histogram with colors according to factor

From: ONKELINX, Thierry <Thierry.ONKELINX_at_inbo.be>
Date: Tue, 08 Jul 2008 13:55:49 +0200

Is this what you want?

dataset <- data.frame(x = c(rnorm(100), runif(100), rchisq(100, 1)), y = gl(3, 100, labels = LETTERS[1:3]))
ggplot(dataset, aes(x = x, fill = y)) + geom_histogram() ggplot(dataset, aes(x = x, fill = y)) + geom_histogram(position = "dodge")

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 Hans W. Borchers
Verzonden: dinsdag 8 juli 2008 13:23
Aan: r-help_at_r-project.org
Onderwerp: [R] Histogram with colors according to factor

Given a data frame with a continuous variable and a factor. I would like to
generate a histogram of the continuous variable, where each bar is
filled
with different colors according to the percentage of factor values falling
into this region of the continuous variable.

I looked into packages like 'lattice' and 'ggplot2'. Searching R-help revealed that 'histogram' is spelled 'histogramm' in almost 2% of the time. I now know how to color whole bars, but did not find a solution for this specific kind of visualization.

Many thanks in advance, Hans Werner Borchers



Hans W. Borchers
ABB Corporate Research


Hans W. Borchers
ABB Corporate Research Germany
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