[issue17149] random.vonmisesvariate() results range is inconsistent for small and not small kappa

Mark Dickinson report at bugs.python.org
Fri Feb 8 16:02:24 CET 2013


Mark Dickinson added the comment:

Agreed that this seems inconsistent.  The current normalization for non-small kappa is a little odd:  e.g, if mu is small and negative (-0.01, say), then we get a range that goes roughly from pi to 3*pi, when a range from -pi to pi would have made more sense.

Any of (1) returning values in the range [mu - pi, mu+pi], (2) returning values in the range [-pi, pi], or (3) returning values in the range [0, 2*pi] would seem reasonable.

Unassigning (the original problem is solved by not being there!)

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assignee: mark.dickinson -> 

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<http://bugs.python.org/issue17149>
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