clouddrift.adapters.gdp.order_by_date

clouddrift.adapters.gdp.order_by_date(df: DataFrame, idx: list[int]) → list[int]

From the previously sorted DataFrame of directory files, return the unique set of drifter IDs sorted by their start date (the date of the first quality-controlled data point).

Parameters

idxlist

List of drifters to include in the ragged array

Returns

idxlist

Unique set of drifter IDs sorted by their start date.