Plot in real time

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Jerry
Jerry 2013-12-2
评论： sixwwwwww 2013-12-3
i have a code that i wrote to perform an output of simple harmonic function. and when i plot the result in realtime (as is it going through the for loop) rather than plotting y versus time, it is plotting two point (1,time) and (2,y) and draws a line in between.
any help is appreciated as i am new at using matlab
clf;
A=3.3;
W=6.28;
time=0;
p=0;
for t = (0:0.01:2)
y=A*sin(W*t);
time = time +0.01;
p=[time,y];
graph=plot(p);
drawnow;
p
pause(0.1)
end

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回答（1 个）

sixwwwwww
sixwwwwww 2013-12-2
编辑：sixwwwwww 2013-12-2
Dear Jerry try this:
A = 3.3;
W = 6.28;
for t = 0:0.01:2
y = A * sin(W * t);
plot(t, y, 'g*'), hold on
drawnow;
pause(0.1)
end
I hope it helps. Good luck!
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Jerry
Jerry 2013-12-3
how do make to be a line between the points?
sixwwwwww
sixwwwwww 2013-12-3
the 'hold on' command holds the current plot and then plots new data on the same graph without overwriting it. Secondly, in ur original you were plotting data wrongly

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