dgauss - G = G/sum(G); dG = -x.*G/sig^2;

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function dG = dgauss(sig) f x = floor(-3*sig):ceil(3*sig); G = exp(-0.5*x.^2/sig^2);
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Unformatted text preview: G = G/sum(G); dG = -x.*G/sig^2;...
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