2 messages · Richard M. Heiberger, John Kane
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.
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