Re: plotting fold change per chromosome in asci order

[Ista Zahn]

Hi Hermann,

You can use the mixedsort() function in the gtools package, like this:

library(gtools)
daten$ch <- factor(daten$ch, levels = mixedsort(daten$ch))
qplot (ch, fc, data=daten)

Best,
Ista


On Wed, Sep 5, 2012 at 4:06 PM, Hermann Norpois <hnor...@googlemail.com> wrote:
> to whom it may concern.
>
> I wish to plot expression levels of genes for each chromosome and get the
> chromomes in asci order. My list:
> ID Chromosome Fold Change
> xy 3 1.5
> zu X 1.8
>
> expect
> the vectors
> id for ID
> ch for Chromosome
> fc for Fold Chane
>
> I tried:
> qplot (ch, fc, data=daten)
>
> Principally the plot is okay but ...
> I get the chromomes on the x-axis in asci order (1, 10 etc). Of course I
> prefer the "classical" order (1,2,...X,Y). How does this work?
> Thanks
> hermann Norpois
>
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[Hermann Norpois]