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view stripeMatrixPeriodic.m @ 842:619561e9ec0e feature/burgers1d

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Reformulate the RK4 time stages in order to easier see how the residual should be updated.
author Vidar Stiernström <vidar.stiernstrom@it.uu.se>
date Fri, 14 Sep 2018 16:40:19 +0200
parents bbf303c1f0cf
children
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% Creates a periodic discretization matrix of size n x n
%  with the values of val on the diagonals diag.
%   A = stripeMatrix(val,diags,n)
function A = stripeMatrixPeriodic(val,diags,n)

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