How to plot shifting square pulse

Question

David Bustamante 2020-4-18

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/518977-how-to-plot-shifting-square-pulse

评论： Star Strider 2020-4-19

I cant figure out how to plot a graph of a square pulse shifting to the right across the x axis. This is currently what I have, but it just outputs a singular square wave, and I want a moving plot that shifts to the right with a step of 0.5. Any help is appreciated, thank you!

x = linspace(-5,5,10000);
pulse = rect(x,2);
%plot(x,pulse);
tau = 0;
for k = 1:length(x)
    pause(3)
    plot(x - tau,pulse);
    drawnow;
    tau = tau + 0.5;
end
function a = rect(t,len)
    x = zeros(length(t));
    for i=1:length(t)
        if abs(t(i)) > len/2.0
            x(i) = 0;
        else
            x(i) = 1;
        end
    end
    a = x;
end

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Answer 1

Star Strider 2020-4-19

2
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It is difficult to understand your code.

Here is a slightly simpler version:

x = linspace(-5, 5, 1000);
pulse = [0 ones(1,20) 0];
figure
for k = 1:numel(x)-numel(pulse)
    plot(x(k:k+numel(pulse)-1), pulse)
    axis([min(x) max(x)    0 1.5])
    drawnow
end