Mercurial > repos > public > sbplib

view diags.m @ 1008:a6f34de60044 feature/burgers2d

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
First attempt at implementing Burgers in 2D with RV-stabilization
author Vidar Stiernström <vidar.stiernstrom@it.uu.se>
date Fri, 12 Oct 2018 08:54:39 +0200
parents 0b87863cb29c
children
line wrap: on
line source

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