[R] Create rows for columns in dataframe

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Hi Arun,

The second method is indeed working much faster. It worked fast for my
600.000 row record.
Still I have 2 bigger files where processing becomes an issue even though I
have lots of memory (32 gig) for the second statement:
res2<-reshape(dat2,idvar="newCol",varying=list(2:26),direction="long") 

Would data.table also take less memory? Maybe even speed things up would be
good. How would I do it?
I think splitting the dataframe before merging it might also be an option
and after that combining them, any ideas on that?

Regards Dirk





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