SHOW:
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- or go back to the newest paste.
| 1 | close all; clear; | |
| 2 | N = 100; | |
| 3 | P = 200; | |
| 4 | x = 1:N; | |
| 5 | y = sin(2*pi/N*x); | |
| 6 | stored = y; | |
| 7 | pathF = zeros(1,P); | |
| 8 | pathB = zeros(1,P); | |
| 9 | path = zeros(1,P); | |
| 10 | ||
| 11 | figure; | |
| 12 | while (1) | |
| 13 | pathB(P) = -pathF(P); | |
| 14 | for i = 1:(P-1) | |
| 15 | pathB(i) = pathB(i+1); | |
| 16 | end | |
| 17 | for i = P:-1:2 | |
| 18 | pathF(i) = pathF(i-1); | |
| 19 | end | |
| 20 | pathF(1) = stored(end); | |
| 21 | for i = N:-1:2 | |
| 22 | stored(i) = stored(i-1); | |
| 23 | end | |
| 24 | stored(1) = 0; | |
| 25 | if (nnz(stored) == 0) | |
| 26 | stored = y; | |
| 27 | end | |
| 28 | path = pathF + pathB; | |
| 29 | plot(path); hold on; | |
| 30 | plot(pathF); plot(pathB); | |
| 31 | legend('Sum wave', 'Forward wave', 'Backward wave');
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| 32 | axis([1 P -2.5 2.5]); | |
| 33 | hold off; | |
| 34 | drawnow; | |
| 35 | end |
