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view isEquidistant.m @ 1172:9dd10dcff128 feature/rv

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Dont return penalty terms from operators on coarse grid. One can use the penalty terms constructed for the fine grid
author Vidar Stiernström <vidar.stiernstrom@it.uu.se>
date Fri, 28 Jun 2019 13:22:03 +0200
parents b43c4d841afe
children
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% Tests if consecutive elements of vector v are euidistant
function b = isEquidistant(v)
    if length(v) < 2
        error('sbplib:isEquidistant:inputTooShort', 'Input vector is too short');
    end

    tol = 1e-8;

    d = v(2:end) - v(1:end-1);
    err = abs(d - d(1));

    relErr = err./abs(d);

    I_zero = find(d < tol);

    relErr(I_zero) = err(I_zero);

    b = all(relErr < tol);
end