[BioC] How to put out the normalization result of limma as a *.txt file?

James Wettenhall wettenhall at wehi.edu.au
Mon Jun 14 18:14:34 CEST 2004


Hi,

On Mon, 14 Jun 2004, xpzhang wrote:
> I am looking for methods to put out the normalization result. I used
> limma to do the normalization.

OK, then you should have an MA object.  
You can use:
getwd()
to see your current directory,
and 
setwd("C:/Microarray/NormalizationResults")
to change your current directory.  (Forward-slashes are better 
than back-slashes if you are a Windows user.)

Then to write tab-delimited text files, try this:

The first method writes the M values including an initial 
column containing row names of the R matrix MA$M:

write.table(MA$M,file="Mvalues.txt",sep="\t",col.names=NA)

The second method omits the row names:

write.table(MA$M,file="Mvalues2.txt",sep="\t",row.names=FALSE)

You can do the same thing for MA$A.

Hope this helps,
James



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