linopy.ABSENT

linopy.ABSENT = linopy.ABSENT

create the label, leave the slot absent.

A reindexing join otherwise fills what it creates (§10). Passing linopy.ABSENT instead keeps the join’s coordinates but makes every created position absent, so §6 absorbs it and §12 drops the row. It is a dedicated object rather than np.nan because a user-supplied NaN raises under §5, and rather than None because that already means “the operator’s default fill”.

Type:

Sentinel for fill_value=