Mercurial > repos > public > sbplib

view stripeMatrix.m @ 1151:03ecf18d035f feature/rv

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Set RV artificial viscosity to zero around borders of the domain
author Vidar Stiernström <vidar.stiernstrom@it.uu.se>
date Mon, 18 Feb 2019 09:00:00 +0100
parents 5cb99f56f55e
children
line wrap: on
line source

% Creates a matrix of size n,m with the values of val on the diagonals diag.
%   A = stripeMatrix(val,diags,n,m)
function A = stripeMatrix(val,diags,n,m)
    default_arg('m',n);

    D = ones(n,1)*val;
    A = spdiags(D,diags,n,m);
end