4.4.2.2.1.1.1. statsmodels.formula.formulatools.NAAction.__init__

NAAction.__init__(on_NA='drop', NA_types=['None', 'NaN'])[source]

The NAAction constructor takes the following arguments:

Parameters:
  • on_NA – How to handle missing values. The default is "drop", which removes all rows from all matrices which contain any missing values. Also available is "raise", which raises an exception when any missing values are encountered.
  • NA_types –

    Which rules are used to identify missing values, as a list of strings. Allowed values are:

    • "None": treat the None object as missing in categorical data.
    • "NaN": treat floating point NaN values as missing in categorical and numerical data.

New in version 0.2.0.