rendezvous_dataframes

lsst_efd_client.rendezvous_dataframes(left, right, direction='backward', tolerance=Timedelta('20 days 00:00:00'), **kwargs)

Extend each record in left with a corresponding record in “right”, if one exists.

By default, the record in right will be the most recent record in the past. The other options are the closest record in the future and the nearest overall.

Parameters:

• left (pandas.DataFrame) – The DataFrame to extend

• right (pandas.DataFrame) – The DataFrame to rendezvous with left

• direction (str) – The direction to search for the nearest record. Default is backward. The other options are forward and nearest.

• tolerance (pandas.Timedelta) – The to,e window to search for the matching record.

• kwargs (dict) – Additional keyword arguments will be forwarded to the pandas.merge_asof function.