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view spdiag.m @ 557:2a856a589510 feature/grids/laplace_refactor

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Add creation of physical boundary normal derivatives
author Jonatan Werpers <jonatan@werpers.com>
date Tue, 29 Aug 2017 12:32:57 +0200
parents 8e0067aef5b0
children e76321b89c1e
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line source

function A = spdiag(a,i)
    default_arg('i',0);

    if isrow(a)
        a = a';
    end

    n = length(a)-abs(i);
    A = spdiags(a,i,n,n);
end