[R] Row count on criteria

Filoche pmassicotte at hotmail.com
Fri Jun 1 19:37:03 CEST 2012


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.



More information about the R-help mailing list