[BioC] Specific annotation information from ExpressionSet

[Daniel Brewer]

Hello,

Is there any functions in bioconductor that can take an ExpressionSet,
find the correct annotation object and then get information? So the
function would use annotation() to get the object and then use that
object for a specific purpose

I have two uses for this:
1) Given a REFSEQ ID find the corresponding probes in an ExpressionSet
and print the expression for those probes e.g.
getExprFromREFSEQ(REFSEQID, ExpressionSet)
2) Given a probe and ExpressionSet find the gene symbol.
getSymbol(ExpressionSet, ProbeID)

If not, any ideas on the best way to do this?

Thanks

-- 
**************************************************************
Daniel Brewer, Ph.D.

Institute of Cancer Research
Molecular Carcinogenesis
Email: daniel.brewer at icr.ac.uk
**************************************************************

The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limited by Guarantee, Registered in England under Company No. 534147 with its Registered Office at 123 Old Brompton Road, London SW7 3RP.

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