[BioC] Concatenating or merging two or more ExpressionSet objects

[Christos Hatzis]

See 'combine' method for eSets:

combine(eSet,eSet): Combine two eSet objects. To be combined, eSets must
have identical numbers of featureNames, distinct sampleNames, and identical
annotation

-Christos

-----Original Message-----
From: bioconductor-bounces at r-project.org
[mailto:bioconductor-bounces at r-project.org] On Behalf Of Richard Leduc
Sent: Monday, April 25, 2011 2:59 PM
To: bioconductor at r-project.org
Subject: [BioC] Concatenating or merging two or more ExpressionSet objects

Hello All,

I am somewhat new to R and definitely new to Bioconductor,
so the answer to this may be painfully obvious, but I have failed to find
it.

We have a data processing pipeline that creates and analyzes
microarray data with Bioconductor (no surprise there). The pipeline creates
ExpressionSet objects that are written to the file system in RData files.

I have been asked to write a block of code that (amongst
other things) loads two (or more) ExpressionSets from different RData files,
checks
that they have same row names (to validate that they are from the same type
of
array), and concatenate them into one larger expression set. I can get
everything up to the last step. Is there a simple way to merge two
ExpressionSet
objects?

Thanks,

Rich
--
Richard LeDuc
Associate Scientist/Bioinformaticist
Great Lakes Bioenergy Research Center
University of Wisconsin - Madison
(608) 890-0007

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