Return the concentration parameter that corresponds to a given circular variance.
vmises.kappa(nu)
circular variance
Concentration parameter corresponding to nu.
The concentration parameter
mardia2000
# NOT RUN {
# Find the concentration parameter for circular variances 0.25, 0.5, 0.75
vmises.kappa(0.25)
vmises.kappa(0.5)
vmises.kappa(0.75)
# }
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