Mercurial > repos > public > sbplib

view spdiag.m @ 671:993aac771efd feature/d1_staggered

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Correct characteristic BC in staggered acoustics 1D constant coeff.
author Martin Almquist <malmquist@stanford.edu>
date Wed, 27 Dec 2017 17:18:51 +0100
parents 8e0067aef5b0
children e76321b89c1e
line wrap: on
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