merge(dat, pheno, by.x = "sid", by.y = "sen")
Scott
On Wednesday, May 4, 2011 at 12:53 PM, 1Rnwb wrote:
> Hello,
>
> I have data in a dataframe with 139104 rows which is multiple of 96x1449. i
> have a phenotype file which contains the phenotype information for the 96
> samples. the snp name is repeated 1449X96 samples. I haveto merge the two
> dataframes based on sid and sen. this is how my two dataframes look like
> dat<-data.frame(snpname=rep(letters[1:12],12),sid=rep(1:12,each=12),
> genotype=rep(c('aa','ab','bb'), 12))
> pheno<-data.frame(sen=1:12,disease=rep(c('N','Y'),6), wellid=1:12)
>
> I have to merge or add the disease column and 3 other columns to the data
> file. I am unable to use merge in R. I have searched google, i guess i am
> not hitting the correct terms to get the answer. I would appreciate any
> input on this issue. thanks
> sharad
>
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