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data<-read.table(stdin(), head=T, sep=",") id,x 1,0.3604464 2,0.4813987 3,0.0160058 4,0.7165909 5,0.6092248 6,0.2413049 7,0.7981568 8,0.6093960 9,0.2887064 10,0.3485780 selected.id <- sample(data$id,3,replace=F) selected.id data.subset<-subset(data, id %in% selected.id) data.subset Cheers milton On Wed, May 6, 2009 at 12:42 AM, abdul kudus <abdul.ku...@gmail.com> wrote: > Dear all, > > > data <- data.frame(id=seq(1:10),x=runif(10)) > > data > id x > 1 1 0.3604464 > 2 2 0.4813987 > 3 3 0.0160058 > 4 4 0.7165909 > 5 5 0.6092248 > 6 6 0.2413049 > 7 7 0.7981568 > 8 8 0.6093960 > 9 9 0.2887064 > 10 10 0.3485780 > > selected.id <- sample(data$id,3,replace=F) > > selected.id > [1] 9 7 1 > > I want to select data with corresponding selected.id, namely > > > selected.data > id x > 9 9 0.2887064 > 7 7 0.7981568 > 1 1 0.3604464 > > How to do? > > Tq. > > Abdul Kudus > Institute for Mathematical Research > Universiti Putra Malaysia > > [[alternative HTML version deleted]] > > ______________________________________________ > 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<http://www.r-project.org/posting-guide.html> > and provide commented, minimal, self-contained, reproducible code. > [[alternative HTML version deleted]] ______________________________________________ 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.
