[R] ggplot2: labels and breaks order does not match and I can't usescale_fill_identity

[ONKELINX, Thierry]

Mikhail,

Have you tried sorting your dataframe according to the levels on the
x-axis?

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 op inbo.be 
www.inbo.be 

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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.
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-----Oorspronkelijk bericht-----
Van: r-help-bounces op r-project.org [mailto:r-help-bounces op r-project.org]
Namens Mikhail Spivakov
Verzonden: dinsdag 29 april 2008 16:53
Aan: r-help op r-project.org
Onderwerp: [R] ggplot2: labels and breaks order does not match and I
can't usescale_fill_identity

Hi,

I'm plotting a bar chart like this:

ggplot() +
geom_bar(data=res,aes(fill=f1,x=f2,y=y),stat="identity",position="dodge"
)

f1 contains quite a few levels and the plot is really quite difficult to
read when the order of bars on the graph and on the legend does not
match.

This problem has been discussed recently here:
http://www.nabble.com/ggplot2---legend-for-fill-coulours-td16235166.html
and the solution was to use scale_fill_identity to manually define the
order
of both the breaks and the labels.
This is however unsuitable for me (at least in the unmodified form), as
this
is part of a script that does not know in advance how many levels there
arae
in f1.

Is there a way round this problem?

Many thanks
Mikhail Spivakov

Mikhail Spivakov PhD
Postdoctoral Fellow
EMBL/EBI
Germany/UK

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