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- function [thetahat kappa] = circ_vmpar(alpha,w,d)
- % r = circ_vmpar(alpha, w, d)
- % Estimate the parameters of a von Mises distribution.
- %
- % Input:
- % alpha sample of angles in radians
- % [w number of incidences in case of binned angle data]
- % [d spacing of bin centers for binned data, if supplied
- % correction factor is used to correct for bias in
- % estimation of r, in radians (!)]
- %
- % Output:
- % thetahat preferred direction
- % kappa concentration parameter
- %
- % PHB 3/23/2009
- %
- % References:
- % Statistical analysis of circular data, N.I. Fisher
- %
- % Circular Statistics Toolbox for Matlab
- % By Philipp Berens, 2009
- % berens@tuebingen.mpg.de
- alpha = alpha(:);
- if nargin < 2
- w = ones(size(alpha));
- end
- if nargin < 3
- d = 0;
- end
- r = circ_r(alpha,w,d);
- kappa = circ_kappa(r);
- thetahat = circ_mean(alpha,w);
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