Dear Felipe,
Is this what you want?
library(ggplot2)
mydata <- data.frame(PondName = factor(LETTERS[1:5]), avgWt = rnorm(5,
mean = 10, sd = 3))
ggplot(mydata, aes(x = PondName, y = avgWt)) + geom_bar()
ggplot(mydata, aes(x = PondName, y = avgWt, fill = PondName)) +
geom_bar()
HTH,
Thierry
------------------------------------------------------------------------
----
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature
and Forest
Cel biometrie, methodologie en kwaliteitszorg / Section biometrics,
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Gaverstraat 4
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tel. + 32 54/436 185
Thierry.Onkelinx op 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 op r-project.org [mailto:r-help-bounces op r-project.org]
Namens Felipe Carrillo
Verzonden: maandag 23 juni 2008 2:09
Aan: r-help op stat.math.ethz.ch
Onderwerp: [R] ggplot2-barplot
Hi all:
I have been using ggplot2 graphics for quite some time now and I really
like it. However, I haven't used barplots enough to understand the
arquitecture behind it. Can someone show me how to make this simple
barplot graph with ggplot2? I want "PondName" along the x axis and
"avgWt" along the Y axis which represents the avgWt by each Pond.
PondName avgWt
Pond01 21.5
Pond02 17.8
Pond03 17.8
Pond04 17.8
Pond05 16.375
Pond06 21.5
Pond07 21.5
Using sigmaplot or Excel is a simple task but I can't get it to work
with ggplot2. I was trying:
qplot(PondName,data=mydata,geom="bar") +
geom_bar(fill=factor(PondName))
but I don't get the desired results. Thanks
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