xarray.core.rolling_exp.RollingExp¶

class xarray.core.rolling_exp.RollingExp(obj, windows, window_type='span')¶

Exponentially-weighted moving window object. Similar to EWM in pandas

Parameters

objDataset or DataArray

Object to window.

windowsA single mapping from a single dimension name to window value

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

Returns

__init__(obj, windows, window_type='span')¶: Initialize self. See help(type(self)) for accurate signature.

Methods

`__init__`(obj, windows[, window_type])	Initialize self.
`mean`()	Exponentially weighted moving average