Mercurial > repos > public > sbplib

view spdiag.m @ 641:070d578997f6 feature/d1_staggered

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Add helper function for primal and dual 1D staggered grid, and a test for that function.
author Martin Almquist <malmquist@stanford.edu>
date Sat, 11 Nov 2017 20:26:37 -0800
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