>>> df = pd.DataFrame(
... columns=["City", "A", "B", "C", "D"],
... data=[
... ("Berlin", 15.0, 10.0, 10.1, 1.0),
... ("London", 24.0, 16.0, 20.5, 3.14),
... ("New York", -27.0, 15.0, 30.7, 10.0),
... ("Paris", 0.0, 0.0, 0.0, 0.0),
... ],
... )
>>> table = session.read_pandas(df, keys={"City"}, table_name="Math")
>>> cube = session.create_cube(table)
>>> l, m = cube.levels, cube.measures
>>> m["erf"] = tt.math.erf(m["D.SUM"])
>>> m["erf"].formatter = "DOUBLE[#,##0.000000]"
>>> cube.query(m["D.SUM"], m["erf"], levels=[l["City"]])
D.SUM erf
City
Berlin 1.00 0.842701
London 3.14 0.999991
New York 10.00 1.000000
Paris .00 0.000000
