temporian.EventSet.begin

begin() -> EventSetOrNode

Generates a single timestamp at the beginning of the EventSet, per index group.

Usage example

>>> a = tp.event_set(
...     timestamps=[5, 6, 7, -1],
...     features={"f": [50, 60, 70, -10], "idx": [1, 1, 1, 2]},
...     indexes=["idx"]
... )

>>> a_ini = a.begin()
>>> a_ini
indexes: [('idx', int64)]
features: []
events:
    idx=1 (1 events):
        timestamps: [5.]
    idx=2 (1 events):
        timestamps: [-1.]
...

Returns:

Type	Description
EventSetOrNode	A feature-less EventSet with a single timestamp per index group.