pandas.expanding_count¶
- pandas.expanding_count(arg, freq=None)¶
Expanding count of number of non-NaN observations.
Parameters : arg : DataFrame or numpy ndarray-like
freq : string or DateOffset object, optional (default None)
Frequency to conform the data to before computing the statistic. Specified as a frequency string or DateOffset object.
Returns : expanding_count : type of caller
Notes
The freq keyword is used to conform time series data to a specified frequency by resampling the data. This is done with the default parameters of resample() (i.e. using the mean).