xarray.DataArray.rolling_exp¶
-
DataArray.
rolling_exp
(window: Optional[Mapping[Hashable, int]] = None, window_type: str = 'span', **window_kwargs)¶ Exponentially-weighted moving window. Similar to EWM in pandas
Requires the optional Numbagg dependency.
- Parameters
- windowA single mapping from a dimension name to window value,
optional
- dimstr
Name of the dimension to create the rolling exponential window along (e.g., time).
- windowint
Size of the moving window. The type of this is specified in window_type
- window_typestr, one of [‘span’, ‘com’, ‘halflife’, ‘alpha’],
default ‘span’
The format of the previously supplied window. Each is a simple numerical transformation of the others. Described in detail: https://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.ewm.html
- **window_kwargsoptional
The keyword arguments form of
window
. One of window or window_kwargs must be provided.
See also