[BioC] Converting .gpr files to .csv files

James W. MacDonald jmacdon at uw.edu
Tue Sep 9 04:16:38 CEST 2014

Hi Adriana,

I know there is a temptation to want to open files using excel, but you
should resist that temptation. Instead, read the limma user's guide,
particularly starting on page 17. You want to read those files in using
read.maimages, with source="genepix".

The limma package has all the functionality necessary to read in and
analyze your data, and the limma user's guide has numerous examples that
should help you understand how to proceed.


On Sep 8, 2014 8:40 PM, "Adriana Charles [guest]" <guest at bioconductor.org>

> I just got some microarray data sent over to me. The files are .gpr and I
> would like to convert then to .csv files to open the data in excel and
> eventually in R. Im not sure how to go about doing that.
>  -- output of sessionInfo():
> R version 3.1.1 (2014-07-10)
> Platform: i386-w64-mingw32/i386 (32-bit)
> locale:
> [1] LC_COLLATE=English_United States.1252
> [2] LC_CTYPE=English_United States.1252
> [3] LC_MONETARY=English_United States.1252
> [5] LC_TIME=English_United States.1252
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
> --
> Sent via the guest posting facility at bioconductor.org.
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