atoti.array.n_greatest module

atoti.array.n_greatest(measure, /, n)

Return an array measure containing the n greatest elements of the passed array measure.

Example

>>> pnl_table = session.read_csv(
...     f"{RESOURCES}/pnl.csv",
...     array_separator=";",
...     keys=["Continent", "Country"],
...     table_name="PnL",
... )
>>> cube = session.create_cube(pnl_table)
>>> l, m = cube.levels, cube.measures
>>> m["Top 3"] = tt.array.n_greatest(m["PnL.SUM"], n=3)
>>> cube.query(m["PnL.SUM"], m["Top 3"])
                          PnL.SUM                                    Top 3
0  doubleVector[10]{-20.163, ...}  doubleVector[3]{9.259999999999998, ...}

Return type

MeasureDescription