Hi,
I have a large dataset on which I would like to do the following:
x<-data.frame(id=c(1,2,3), snp1=c("AA","GG",
"AG"),snp2=c("GG","AG","GG"),snp3=c("GG","AG","AA"))
> x
id snp1 snp2 snp3
1 1 AA GG GG
2 2 GG AG AG
3 3 AG GG AA
And then reshape the dataset in such a way that the individuals get 2
observations for every snp by splitting the genotypes (in this case):
id snp1 snp2 snp3
1 A G A
1 A G G
2 G A G
2 G G G
3 G A A
3 G G A
It is probably quite easy to solve, but I can???t get it right???
Thanks for your help and valuable time!
Naomi Duijvesteijn
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