Displaying 2 results from an estimated 2 matches for "assay_id".
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array_id
2006 Dec 31
4
Does SQL group by have a heavy duty equivalent in R
...ind 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$ASSAY_ID),length)
This was simply to figure out how many times the same piece of information
had been obtained. I ran out of patience. It took beyond forever and tapply
did not perform much better. The reshape package did not help - it implied
one was out of luck if the data was not numeric. All of my data...
2007 Jan 01
1
Subset by using multiple values
...have a vector containg about 20 unique values. It is called rejectrs$rs.
It is a factor
I have a data frame with about 100000 rows.
I want to exclude all rows where in variable rs the value is one of the 20
on the exclude list. I thought this would work but none did.
RawSeqBig<-subset(RawSeqBig,ASSAY_ID!=rejectrs$rs)
RawSeqBig<-subset(RawSeqBig,ASSAY_ID!=list(rejectrs$rs))
--
Farrel Buchinsky
Mobile: (412) 779-1073
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