Parallel coordinate plots should be listed under many numeric variables as an option, as they're originally intended for numeric variables. (Generalized) PCPs are listed under num + cat, but the categorical variables aren't necessary to make the plot.
Parallel coordinate plots should be listed under many numeric variables as an option, as they're originally intended for numeric variables. (Generalized) PCPs are listed under num + cat, but the categorical variables aren't necessary to make the plot.