err.m

来自「时间域有限差分法（TD-FDM）源代码」· M 代码 · 共 14 行

rmsarr = [.0085 .0142 .0189 .0295 .0379];
steps = [1689 1591 1494 1369 1306];

figure;
plot(steps,rmsarr,'-o');
xlabel('Number of time steps to converge'); ylabel('Normalized root mean square');

figure;
unknowns = [21 41 81]
steps = [1002 1368 1896]
plot(unknowns, steps, '-o');
xlabel('Number of unknowns'); ylabel('Number of time steps to converge');
axis([15 90 800 2000]);