Dear Anna, 19.02.2010 08:17, Anna Carter wrote: > (1) If the dataset contains some variables having all the entries = 0 > and while analysing I want to delete those pericular columns, how do > acheive this. i.e.
Let's suppose 'df' is your data frame, then: subset(df, select=which(colSums(df)!=0)) should do the work :) HTH, Kimmo ______________________________________________ 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.
