[BioC] how to convert expression set data into matrix data ?

[Jean Yee Hwa Yang]

Hi Anne,

Use
data <- exprs(B)

You will find more information from the Biobase vignettes.

Jean

On Fri, 1 Aug 2003, Anne Sauve wrote:

> Hello,
> 
> I am trying to convert some expression set data into a matrix format 
> in order to do computations on them.
> 
> The way I do it now is in 3 steps:
> 
> write.exprs(B[,14],file="B.txt")
> B = read.table("B.txt")
> Bmat = as.matrix(Bmat)
> 
> where B is an expression set with 15 samples and 12626 genes.
> 
> Is there a more direct way of doing that conversion ?
> 
> Thanks for  your help,
> 
> Anne
> 
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