[BioC] EdgeR: Problem with selection of highest transcript

[anna [guest]]

Hello, when I use this (from carcinoma vs normal example), I select only the lowest transcript instead of the higest:
> o <- order(rowSums(y$counts))
> y <- y[o,]
> d <- duplicated(y$genes$Symbol)
> y <- y[!d,]
> nrow(y)

what is wrong ?
I am a novice in informatics.
and I do not know how to save my list of genes (for example after the carcinoma vs normaltissue example).
many thanks,
Best regards,
anna

 -- output of sessionInfo(): 

R version 2.15.1 (2012-06-22)
Platform: i386-pc-mingw32/i386 (32-bit)

locale:
[1] LC_COLLATE=French_France.1252  LC_CTYPE=French_France.1252   
[3] LC_MONETARY=French_France.1252 LC_NUMERIC=C                  
[5] LC_TIME=French_France.1252    

attached base packages:
[1] splines   stats     graphics  grDevices utils     datasets  methods  
[8] base     

other attached packages:
[1] edgeR_3.0.0  limma_3.14.1

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