Hello,
> head(a)
ID_1 pheno
1 0 B
2 fam1000_G1000 0
3 fam1001_G1001 0
4 fam1003_G1003 1
5 fam1005_G1005 0
6 fam1009_G1009 0
> head(b)
ID_1 ID_2 missing
1 0 0 0
2 fam1000_G1000 fam1000_G1000 0
3 fam1001_G1001 fam1001_G1001 0
4 fam1003_G1003 fam1003_G1003 0
5 fam1005_G1005 fam1005_G1005 0
6 fam1009_G1009 fam1009_G1009 0
> dim(b)
[1] 1602 3
> dim(a)
[1] 1652 2
> m=merge(a,b,by="ID_1")
> dim(m)
[1] 1499 4
> head(m)
ID_1 pheno ID_2 missing
1 0 B 0 0
2 fam0110_G110 1 fam0110_G110 0
3 fam0117_G117 1 fam0117_G117 0
4 fam0124_G124 <NA> fam0124_G124 0
I would like my merged file (m) to have the same number of lines like
(b), that is 1602. Can you please let me know how would I do that?
Thanks
Ana
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
