/pandas 0.23


Panel.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

where : date or array of dates

subset : string or list of strings, default None

if not None use these columns for NaN propagation


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



Dates are assumed to be sorted Raises if this is not the case

© 2008–2012, AQR Capital Management, LLC, Lambda Foundry, Inc. and PyData Development Team
Licensed under the 3-clause BSD License.