Returns unique and sorted track values
emr_track.unique(track)
track name
A vector of values
Returns unique and sorted track values. NaN values (if exist in the track) are not returned.
Note: this function ignores the current subset, i.e. the unique values of the whole track are returned.
emr_db.init_examples()
#> NULL
emr_track.unique("categorical_track")
#> [1] 0 1 2 3 4