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delfosse
2009 May 08
1
Merging two data frames with 3 common variables makes duplicated rows
...without
using the unique() function?
1. First data frame is called "tmv" with 6 variables and 239 rows:
> tmv[1:10,]
temps nom prenom sexe dist style
1 01:59:36 Cyr Steve H 45 free
2 02:09:55 Gosselin Erick H 45 free
3 02:12:18 Desfosses Sacha H 45 free
4 02:12:23 Lapointe Sebastien H 45 free
5 02:12:52 Labrie Michel H 45 free
6 02:12:54 Leblanc Michel H 45 free
7 02:13:02 Thibeault Sylvain H 45 free
8 02:13:49 Martel Stephane H 45 free
9 02:1...