Mercurial > repos > public > sbplib

view +util/matrixborrow.m @ 104:ffd9e68f63cc feature/arclen-param

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Splined in the other direction! Works great. Runs faster. Removed ugly fix outside [0,1] in spline(). Camelcased numerical_derivative().
author Martin Almquist <martin.almquist@it.uu.se>
date Mon, 07 Dec 2015 18:46:59 +0100
parents 48b6fb693025
children
line wrap: on
line source

function alpha = matrixborrow(A,B)

    function y = neg(x)
        y = min(eig(A-x*B));
    end


    x0 = 1;
    while neg(x0) > -1
        x0 = 2*x0;
    end

    opt = optimset('Display','none');
    alpha = fsolve(@neg, x0,opt);
end