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view spdiag.m @ 706:a95c89436916 feature/optim

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add arnoldi
author Ylva Rydin <ylva.rydin@telia.com>
date Mon, 06 Nov 2017 11:42:15 +0100
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