Hi,
eset is an expressionset based on hgu133plus2 platform.
Using hgu133plus2.db package, I want to map probes to UniGene cluster IDs.
It results in an error message.
>xx=hgu133plus2UNIGENE
>uniaf1=xx[[as.character(featureNames(eset))]]
Error in .checkKeys(value, Lkeys(x), x@ifnotfound) :
value for "AFFX-r2-Hs18SrRNA-3_s_at" not found
Could you please help me figure out what creates the error ?
Many thanks
Vickie
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