Panel.fillna(value=None, method=None)

Fill NaN values using the specified method.

Member Series / TimeSeries are filled separately.

Parameters :

value : any kind (should be same type as array)

Value to use to fill holes (e.g. 0)

method : {‘backfill’, ‘bfill’, ‘pad’, ‘ffill’, None}, default ‘pad’

Method to use for filling holes in reindexed Series

pad / ffill: propagate last valid observation forward to next valid backfill / bfill: use NEXT valid observation to fill gap

Returns :

y : DataFrame