Hello,
Try
colSums(apply(...etc...))
Hope this helps,
Rui Barradas
Em 01-06-2012 18:37, Filoche escreveu:
Hi everyone.
I would like to count number of row higher than 0 for each column in a
dataframe.
For instance, I was using something like:
YY = replicate(5, rnorm(10))
apply(YY,2,">",0)
This give me a boolean matrix, but how to have the count of row with numbers
0 by column?
Thank in advance,
Phil
--
View this message in context:
http://r.789695.n4.nabble.com/Row-count-on-criteria-tp4632100.html
Sent from the R help mailing list archive at Nabble.com.
______________________________________________
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.
______________________________________________
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.
