[BioC] Dist of exprSet object

[Marcus Davy]

P 17 of the vignette("affy").

e.g.

chipCols <- rainbow(ncol(exprs(affybatch.example)))
boxplot(affybatch.example, col=chipCols)

Marcus


On 7/27/06 10:40 AM, "Marco Blanchette" <mblanche at berkeley.edu> wrote:

> Thank you all,
>
> Using bioclite to download the annotation fixed the problem.
>
> Now, I am getting into simpler R problem. I have an exprSet object  of 4
> arrays:
>> eset
> Expression Set (exprSet) with
>         18952 genes
>         4 samples
>                  phenoData object with 1 variables and 4 cases
>          varLabels
>                 sample: arbitrary numbering
>
> My goal is to draw a boxplot of the 4 different samples. Surely I can do:
>> boxplot (exprs(eset)[,1], exprs(eset)[,2], exprs(eset)[,3], exprs(eset)[,4],
> col=c(2,3,4,5))
>
> But is there an easier way to do with without having to subscript each
> individual column? [right now I have only 4 but when I will have 20, I¹ll
> get bored quite rapidly]
>
> Sorry if this sounds easy, I am still learning the basics of R
>
> Marco
> ______________________________
> Marco Blanchette, Ph.D.
>
> mblanche at uclink.berkeley.edu
>
> Donald C. Rio's lab
> Department of Molecular and Cell Biology
> 16 Barker Hall
> University of California
> Berkeley, CA 94720-3204
>
> Tel: (510) 642-1084
> Cell: (510) 847-0996
> Fax: (510) 642-6062


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