Hi, I hope this is not too trivial, but I've had this recurring problem and I think there is super easy solution, just not sure what it is. Please see short example below. I would like to get the frequency (counts) of all the variables in a single column (that is easy), but I would also like to return the value 0 for the absence of variables defined in another column.
For example: animals = matrix(c('cat','tiger','cat','tiger','fish','fish','dog','dog'),ncol=2, byrow=F) animals = as.data.frame(animals) table(animals$V1) # Returns the count for the variables in the first column as cat tiger 2 2 # But I would like to have table(animals$V1) return cat tiger dog fish 2 2 0 0 Any help is much appreciated. Cheers, Dan ______________________________________________ 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.