try subset(D, D$x < 5|D$y < 5)
HTH Pete -- View this message in context: http://r.789695.n4.nabble.com/problem-subsetting-a-data-frame-tp3258981p3259360.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.