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).