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topog
2007 Dec 06
1
finding most highly transcribed genes - ranking, sorting and subsets?
...lt;-RG.MA, then I ranked each R and G values for each array as
below.
rankRG<-RG
rankRG$R[,1]<-rank(rankRG$R[,1])
rankRG$R[,2]<-rank(rankRG$R[,2]) .. and so on for 6 columns(ie. arrays, as
well as the G's)
then I thought I could pull out a subset of rankRG using something like;
topRG<-rankRG
topRG$R<-subset(topRG$R,topRG$R[,1]<500&topRG$R[,2]<500&topRG$R[,5]<500)
However, this just returned me a matrix with one row of $R (the ranks were
<500 for columns 1,2, and 5 and greater than 500 for 3,4,and 6). However, I
can't believe that there is onl...