pandas.DataFrame.asfreq¶
- DataFrame.asfreq(freq, method=None, how=None, normalize=False)¶
Convert all TimeSeries inside to specified frequency using DateOffset objects. Optionally provide fill method to pad/backfill missing values.
Parameters : freq : DateOffset object, or string
method : {‘backfill’, ‘bfill’, ‘pad’, ‘ffill’, None}
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 method
how : {‘start’, ‘end’}, default end
For PeriodIndex only, see PeriodIndex.asfreq
normalize : bool, default False
Whether to reset output index to midnight
Returns : converted : type of caller