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view diags.m @ 551:c5a7a13c03dc feature/grids/laplace_refactor

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Switch to using spdiag instead of spdiags
author Jonatan Werpers <jonatan@werpers.com>
date Mon, 28 Aug 2017 19:01:40 +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