pandas.DataFrame.asof¶
-
DataFrame.
asof
(where, subset=None)[source]¶ The last row without any NaN is taken (or the last row without NaN considering only the subset of columns in the case of a DataFrame)
New in version 0.19.0: For DataFrame
If there is no good value, NaN is returned for a Series a Series of NaN values for a DataFrame
Parameters: - where : date or array of dates
subset : string or list of strings, default None
if not None use these columns for NaN propagation
Returns: where is scalar
- value or NaN if input is Series
- Series if input is DataFrame
- where is Index: same shape object as input
See also
Notes
Dates are assumed to be sorted Raises if this is not the case