undocumented char -> factor conversion in recipe creates non-commutative condition #1377
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The problem
Perhaps I've missed some documentation, but I seem to have identified an issue where {recipes} converts character features to factor invisibly to the user, and this in turn creates a condition where
all_string()andall_string_predictors()operate differently depending on where in the recipe they're used.In my example, I have columns of several different types. I have a few models that will use character features, and some which won't. In this case, I want to remove those features and only keep factors, integers, doubles, etc.
I'd assume that
step_rm(all_string_predictors())would sort this out quickly, but this actually results in unpredictable behavior depending on where in the recipe chain you place it.I could pre-remove these features beforehand, or pre-compute their values and remove them by name, but this seemed somewhat antithetical to the entire tidymodels approach.
Is this expected behavior, and if so, what is the "preferred" solution to handling it?
Reproducible example
Session info
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