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view diags.m @ 561:3a13916f8ff0 feature/grids/laplace_refactor

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Switch to using boundary ops for normal derivative
author Jonatan Werpers <jonatan@werpers.com>
date Tue, 29 Aug 2017 13:10:57 +0200
parents 0b87863cb29c
children
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function A = diags(B,d,m,n)
    assert(size(B,1) == m);

    A = repmat(B(:,1)*0, [1, n]);

    for i = 1:size(B,2)
        A(:,d(i)+ (1:m)) = A(:,d(i)+ (1:m)) + diag(B(:,i));
    end
end