Hi r-help-boun...@r-project.org napsal dne 15.10.2010 15:00:46:
> you can do the following: > > mat <- cbind(x = runif(15, 50, 70), y = rnorm(15, 2)) > mat[sample(15, 2), "x"] <- NA > > na.x <- is.na(mat[, 1]) > mat[na.x, ] > mat[!na.x, ] Or if you have missing data in several columns and you want select only those which are complete use complete.cases mat[complete.cases(mat},] mat[!complete.cases(mat},] Regards Petr > > > I hope it helps. > > Best, > Dimitris > > > On 10/15/2010 2:45 PM, Jumlong Vongprasert wrote: > > Dear all > > I have data like this: > > x y > > [1,] 59.74889 3.1317081 > > [2,] 38.77629 1.7102589 > > [3,] NA 2.2312962 > > [4,] 32.35268 1.3889621 > > [5,] 74.01394 1.5361227 > > [6,] 34.82584 1.1665412 > > [7,] 42.72262 2.7870875 > > [8,] 70.54999 3.3917257 > > [9,] 59.37573 2.6763249 > > [10,] 68.87422 1.9697770 > > [11,] 19.00898 2.0584415 > > [12,] 60.27915 2.5365194 > > [13,] 50.76850 2.3943836 > > [14,] NA 2.2862790 > > [15,] 39.01229 1.7924957 > > > > and I want to spit data into two set of data, data set of nonmising and > > data set of missing. > > How I can do this. > > Many Thanks. > > Jumlong > > > > > > -- > Dimitris Rizopoulos > Assistant Professor > Department of Biostatistics > Erasmus University Medical Center > > Address: PO Box 2040, 3000 CA Rotterdam, the Netherlands > Tel: +31/(0)10/7043478 > Fax: +31/(0)10/7043014 > Web: http://www.erasmusmc.nl/biostatistiek/ > > ______________________________________________ > 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.
