Displaying 1 result from an estimated 1 matches for "rawseq".
2006 Dec 31
4
Does SQL group by have a heavy duty equivalent in R
...ci. Some have even undergone the procedure twice or thrice (kind of an
internal control).
So obviously I need to find those replications, and confirm that the results
are the same. If there is discordance then I need to address it.
I tried to use the aggregate function
nr.attempts
<-aggregate(RawSeq$GENOTYPE_ID,list(sample=RawSeq$SAMPLE_ID,assay=RawSeq$ASSAY_ID),length)
This was simply to figure out how many times the same piece of information
had been obtained. I ran out of patience. It took beyond forever and tapply
did not perform much better. The reshape package did not help - it implied
o...