On Aug 17, 2012, at 8:28 PM, Yingwei Lee wrote:
m=matrix(c(1:4, c(0, 0, 0, 0), c(1, 0, 1, 1)), nc=4, byrow=TRUE)
is.na(m) <- m==0 rowMeans(m, na.rm=T) #[1] 2.5 NaN 1.0 -- David Winsemius, MD Alameda, CA, USA ______________________________________________ [email protected] 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.
