Displaying 1 result from an estimated 1 matches for "eo5".
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el5
2006 Jun 30
2
aggregate data.frame by one column
Hi, everyone,
I have a data.frame named "eva" like this:
IND PARTNO VC1 EO1 EO2 EO3 EO4 EO5
114 114001 2 5 4 4 5 4
114 114001 2 4 4 4 4 4
114 114001 2 4 NA NA NA NA
112 112002 2 3 3 6 2 6
112 112002 2 1 1 3 4 4
112 112003 2 6 6 6 5 6
112 112003 2 5 7 6 6 6
112 112003 2 6 6 6 4 5
114 114004 2 2...