G Contour Matlab
How to use mesh()
to draw gaussians in 2d, inside this Matlab function...
function G(Mean,Cov,c)
icov = inv(Cov);
det_cov = det(Cov);
const = 1/(2*pi*sqrt(det_cov));
xx = linspace(Mean(1)-3*sqrt(Cov(1,1))开发者_运维知识库,Mean(1)+3*sqrt(Cov(1,1)));
yy = linspace(Mean(2)-3*sqrt(Cov(2,2)),Mean(2)+3*sqrt(Cov(2,2)));
[x y] = meshgrid(xx,yy);
mx=x-Mean(1);
my = y-Mean(2);
z=const*exp(-0.5*(icov(1,1)*mx.^2+icov(2,1)*mx.*my +icov(2,1)*my.*mx+icov(2,2)*my.^2));
contour(x,y,z,c);
Simply replace contour
with mesh
.
Also, try not to use Mean
and Cov
as variable names. mean
and cov
are Matlab functions, and while the spelling is slightly different, you're still setting yourself up for some hard-to-find bugs.
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