On Jul 15, 2010, at 2:37 PM, Addi Wei wrote: > > e.g. I have a big data set called "combined", and then a small sample of > "combined" called "miceSample". I wish to delete "miceSample" from > "combined" to create a new smaller data set and store it into a new object. > > combined <- rbind(scaleMiceTrain, scaleMiceTest) > miceSample <- sample(combined[,-c(1,2)],nvars, replace=FALSE) > > How do I do that?
See ?subset If you have a column in your data frame, say called 'Group', that contains an indicator as to which group each record belongs to: subset(combined, Group != "miceSample") will return a new data frame without the records where the Group column contains 'miceSample'. HTH, Marc Schwartz ______________________________________________ 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.
