Thanks, but I don't have multiple matches and the lines
repeated in the final dataframe are exactly equal in all
columns.
Cecília
Sat, 21 Aug 2010 10:58:53 -0500
Hadley Wickham <had...@rice.edu> escreveu:
You may find a close reading of ?merge helpful,
particularly this
sentence: "If there is more than one match, all possible
matches contribute one row each" (so check that you
don't have
multiple matches).
Hadley
On Sat, Aug 21, 2010 at 10:45 AM, Cecilia Carmo
<cecilia.ca...@ua.pt> wrote:
Hi everyone,
I have been merging many big dataframes (about 80000
rows each) and I never
had this problem, but now it happened to me and I want
to know if someone
knows what could be happening.
The final dataframe has many rows, an impossible number!
I have done
edit(dataframe) and I saw that there are many repeated
rows (all equal).
Thanks for any help,
Cecília Carmo
Universidade de Aveiro
Portugal
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Assistant Professor / Dobelman Family Junior Chair
Department of Statistics / Rice University
http://had.co.nz/
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