pyinterp.core.period.PeriodList.cross_a_period

PeriodList.cross_a_period(self, dates: object) → numpy.ndarray[dtype=bool, shape=(*), order='C']

Identify dates that cross (enter or are within) any managed period.

For each input date, determines whether it either:

• Falls inside one of the periods, OR

• Has at least one period beginning at or after it (before the last input date)

This effectively identifies dates that “encounter” a period in the temporal sequence, excluding only those dates that come after all periods have ended.

Parameters:

dates – Vector of dates to check (should be sorted for optimal performance).

Returns:

A vector of booleans where true indicates the date crosses a period.

Note

If the last date in the input falls within a period, all dates are marked as true since they all precede or coincide with a period.