On Jul 26, 2015, at 6:10 PM, Steven Yen wrote: > How do I judge if a matrix contain any NA or otherwise non-missing, > non-numerical? > In the following, I would like to deliver ONE logical of TRUE or FALSE, > rather than a 4 x 4 matrix containing TRUE or FALSE. Thank you. > > > a<-matrix(1:16,nrow=4) > > diag(a)<-NA > > a > [,1] [,2] [,3] [,4] > [1,] NA 5 9 13 > [2,] 2 NA 10 14 > [3,] 3 7 NA 15 > [4,] 4 8 12 NA
> any(is.na( a)) [1] TRUE > > is.na(a) > [,1] [,2] [,3] [,4] > [1,] TRUE FALSE FALSE FALSE > [2,] FALSE TRUE FALSE FALSE > [3,] FALSE FALSE TRUE FALSE > [4,] FALSE FALSE FALSE TRUE > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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. David Winsemius Alameda, CA, USA ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
