Hello
Is there an analogous function to ”rowsum” that count the numbers
according to a given vector (preferably larger than a given value)
instead of summing them?
E.g. rowsum(x, group)
X is the dataframe, A B C
5 0 0
1 3 3
0 1 12
and group is the vector; 1,1,2
rowsum gives: A B C
1 6 3 3
2 0 1 12
I want: A B C
1 2 1 1
2 0 1 1
for e.g. count all > 0.
Best Regards
Anders
______________________________________________
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.
