Returns the names of the input data columns / variables to which an isolation forest model was fitted.
If the data did not have column names, it will make them up as "column_1..N".
Note that columns will always be reordered so that numeric columns come first, followed by categorical columns.
# S3 method for isolation_forest
variable.names(object, ...)
A character vector containing the column / variable names.
An isolation forest model, as returned by function isolation.forest.
Not used.