pyinterp.core.dateutils.isocalendar¶

pyinterp.core.dateutils.isocalendar(array: numpy.ndarray) → numpy.typing.NDArray[pyinterp::dateutils::ISOCalendar]¶

Extract the ISO calendar from datetime64 values.

Computes the ISO year, week number, and weekday for each datetime64 value. Follows the ISO 8601 standard for week dates where week 1 contains the first Thursday of the year.

Parameters:: array – Numpy array of datetime64 to process.
Returns:: year, week, and weekday.
Return type:: Structured numpy array containing three fields