Hi Andrew,
Thank you very much! It works so well than I can expect.
All the best,
Wei-Wei
2006/6/30, Andrew Robinson <[EMAIL PROTECTED]>:
> Hi Wei-Wei,
>
> try this:
>
> eva.agg <- aggregate(x = list(
>VC1=eva$VC1,
>EO1=eva$EO1,
>
Hi Wei-Wei,
try this:
eva.agg <- aggregate(x = list(
VC1=eva$VC1,
EO1=eva$EO1,
EO2=eva$EO2,
EO3=eva$EO3,
EO4=eva$EO4,
EO5=eva$EO5
),
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
