[Rd] inconsistent handling of factor, character, and logical predictors in lm()
@purd|e@@ @end|ng |rom gm@||@com
Sun Sep 1 04:59:59 CEST 2019
> I think that this misses the point I was trying to make: lm() et al. treat logical variables as factors, not as numerical predictors.
I'm unenthusiastic about mapping TRUE to -1 and FALSE to 1, in the model matrix.
(I nearly got that back the front).
However, I've decided to agree with your original suggestion,
I think it should include the logical levels, if that's the right term...
However, I note that the output still won't be completely consistent.
Because one case leads to a logical vector and the other cases lead to
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