Repeating a sequence of code multiple times in a for loop with random intervals in between

Question

Emma Plater 2020-10-19

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/619303-repeating-a-sequence-of-code-multiple-times-in-a-for-loop-with-random-intervals-in-between

评论： Walter Roberson 2020-10-20

I want to repeat the following code 150 times with 500-800 milliseconds in between (i.e. I want the iterations to be spaced apart randomly, with each spacing being between 500 and 800).

rec=@(x) (x)>=0.75
j = (0 : 0.01 : 29);
k = sin(j);
f = rec(k);
[a,b]=find(f~=0);
N=length(b);
s=0.15;
f=double(f);
f(b)=1+s*rand(1,N);
plot(j,f);
axis([0 29 0 2])

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Answer 1

Walter Roberson 2020-10-19

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https://ww2.mathworks.cn/matlabcentral/answers/619303-repeating-a-sequence-of-code-multiple-times-in-a-for-loop-with-random-intervals-in-between#answer_518573

在 MATLAB Online 中打开

rec=@(x) (x)>=0.75;
for counter = 1 : 150
    j = (0 : 0.01 : 29);
    k = sin(j);
    f = rec(k);
    [a,b]=find(f~=0);
    N=length(b);
    s=0.15;
    f=double(f);
    f(b)=1+s*rand(1,N);
    plot(j,f);
    axis([0 29 0 2])
    drawnow
    delay = 500+300*rand();
    pause(delay/1000);
end

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Emma Plater 2020-10-20

Great, thank you!

How do I then store all iteration loop outputs in a single row? Right now only the result of the last iteration is saved and I'd like to be able to plot all 150 iterations continuously in a single graph.

Walter Roberson 2020-10-20

You cannot store delays. Delays are something that happen in real time. MATLAB does not have any way to allow you to submit a list of points to plot with built-in delays at particular points in the output.

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