Hi, It is easy to understand the types vector and frame.
But I am wondering why the type factor is designed in R. What is the advantage of factor compare with other data types in R? Can somebody give an example in which case the type factor is much better than other data types? Regards, Peng ______________________________________________ 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.
