[R] reshape data, adding rows to dataframe

[Lucia Rueda]

Thanks Henrique!

It solves the problem of having the column "N" with unreal number of
individuals since N=1

with Petr's example:

expand <- transform(dat[rep(1:nrow(dat), times=dat$N), ] ,N=1)
rownames(expand) <- NULL 
expand
> expand
  animal N
1      a 1
2      a 1
3      b 1
4      c 1
5      c 1
6      c 1

Cheers! 
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