Mercurial > hg > camir-ismir2012
view toolboxes/FullBNT-1.0.7/KPMtools/draw_ellipse_axes.m @ 0:cc4b1211e677 tip
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Changeset:
646 (e263d8a21543) added further path and more save "camirversion.m"
author | Daniel Wolff |
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date | Fri, 19 Aug 2016 13:07:06 +0200 |
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function h = draw_ellipse_axes(x, c, linespec) % DRAW_ELLIPSE_AXES(x, c, linespec) % Draws the major and minor axes of ellipses. % Ellipses are centered at x with covariance matrix c. % x is a matrix of columns. c is a positive definite matrix. % linespec is optional. [v,e] = eig(c); v = v*sqrt(e); h = []; for j = 1:cols(v) x1 = repmat(x(1,:),2,1) + repmat([-1;1]*v(1,j),1,cols(x)); x2 = repmat(x(2,:),2,1) + repmat([-1;1]*v(2,j),1,cols(x)); h = [h line(x1,x2)]; end if nargin > 2 set_linespec(h,linespec); end