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AndrewWave.rho()

statsmodels.robust.norms.AndrewWave.rho

AndrewWave.rho(z) [source]

The robust criterion function for Andrew?s wave.

Parameters:

z : array-like

1d array

Returns:

rho : array

rho(z) = a*(1-cos(z/a)) for |z| <= a*pi

rho(z) = 2*a for |z| > a*pi

Links:

http://statsmodels.sourceforge.net/stable/generated/statsmodels.robust.norms.AndrewWave.rho.html

doc_statsmodels

2017-01-18 16:06:29

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