> points(x[4,],pch=2)# this is plotted as two points
drops what it sees as an unnecessary dimension. Use > points(x[4,, drop=FALSE], pch=2) See FAQ 7.5 tmp <- matrix(1:2) tmp tmp[,1] tmp[,1,drop=FALSE] ______________________________________________ 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.
