--- "Richard M. Heiberger" <[EMAIL PROTECTED]> wrote: > > there is > > no factor in the dataset but why there is not one > and > > why a call to another dataset is totally opaque. > > The reason is purely historical. The state dataset > is about > 10 years older than the data.frame concept. At the > time the > state.* variables were constructed it was not > possible to put > numeric data and factor data into the same > rectangular structure.
I see. So originally the example would have been more obvious. Thanks ______________________________________________ [email protected] 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.
