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view find_elements.m @ 104:ffd9e68f63cc feature/arclen-param

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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
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% I = find_elements(a,b)
% Finds the index of elements a in b.
% a and b have to be in the same order.
function I = find_elements(a,b)
    I = [];

    j = 1;
    for i = 1:length(a)
        while b(j) ~= a(i)
            j = j + 1;
        end
        I(end+1) = j;
        j = j+1;
    end

    assert(length(I) == length(a),'Expected %d but got %d elements',length(a),length(I))
end