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annotate plotEig.m @ 1031:2ef20d00b386 feature/advectionRV

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For easier comparison, return both the first order and residual viscosity when evaluating the residual. Add the first order and residual viscosity to the state of the RungekuttaRV time steppers
author Vidar Stiernström <vidar.stiernstrom@it.uu.se>
date Thu, 17 Jan 2019 10:25:06 +0100
parents 7067bf8adbfa
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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64
7067bf8adbfa Fixed some typing and added function to plot eigen values of a matrix.
Jonatan Werpers <jonatan@werpers.com>
parents:
diff changeset
1 % Plots all the eigen values for a sparse matrix.
7067bf8adbfa Fixed some typing and added function to plot eigen values of a matrix.
Jonatan Werpers <jonatan@werpers.com>
parents:
diff changeset
2 function plotEig(A)
7067bf8adbfa Fixed some typing and added function to plot eigen values of a matrix.
Jonatan Werpers <jonatan@werpers.com>
parents:
diff changeset
3 e = eig(full(A));
7067bf8adbfa Fixed some typing and added function to plot eigen values of a matrix.
Jonatan Werpers <jonatan@werpers.com>
parents:
diff changeset
4 e = sort(e);
7067bf8adbfa Fixed some typing and added function to plot eigen values of a matrix.
Jonatan Werpers <jonatan@werpers.com>
parents:
diff changeset
5 plot(e,'.')
7067bf8adbfa Fixed some typing and added function to plot eigen values of a matrix.
Jonatan Werpers <jonatan@werpers.com>
parents:
diff changeset
6 end