[R] reshape dataframe

[Duijvesteijn, Naomi]

   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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