pyrfu.pyrf.pvi module#
- pyrfu.pyrf.pvi.pvi(inp, scale: int = 10)[source]#
Returns the PVI of a time series.
\[y = \frac{|x_i - x_{i+s}|^2}{<|x_i - x_{i+s}|^2>}\]where \(s\) is the scale.
- Parameters:
inp (xarray.DataArray) – Input time series.
scale (int, Optional) – Scale at which to compute the PVI. Default is 10.
- Returns:
values – An xarray containing the pvi of the original time series.
- Return type: