Hi, R function aggregate can only take summary stats functions, can I
aggregate text columns? For example, for the dataframe below,
> a <- rbind(data.frame(id=1, name='Tom',
hobby='fishing'),data.frame(id=1, name='Tom',
hobby='reading'),data.frame(id=2, name='Mary',
hobby='reading'),data.frame(id=3, name='John',
hobby='boating'),data.frame(id=2, name='Mary', hobby='running'))
> a
id name hobby
1 1 Tom fishing
2 1 Tom reading
3 2 Mary reading
4 3 John boating
5 2 Mary running
I want output as
>b
id name hobbies
1 Tom fishing reading
2 Mary reading running
3 John boating
Thanks,
Richard
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
