I want to build the square wave: build a 6 subplot figure to show the time domain, and use respectively 1, 3, 5, 10, 50, 500 frequencies.How can i achieve this?

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Boyi 2022-11-22

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https://ww2.mathworks.cn/matlabcentral/answers/1859733-i-want-to-build-the-square-wave-build-a-6-subplot-figure-to-show-the-time-domain-and-use-respectiv

评论： Boyi 2022-11-22

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Answer 1

Image Analyst 2022-11-22

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编辑：Image Analyst 2022-11-22

在 MATLAB Online 中打开

Start with this:

allFreqs = [1, 3, 5, 10, 50, 500];
for k = 1 : length(allFreqs)
    thisFreq = allFreqs(k);
    subplot(length(allFreqs), 1, k);
    % Code to generate Rect want, for you to do.
    rectWave = whatever....................
    plot(rectWave, 'b-', 'LineWidth', 2);
    grid on
    caption = sprintf('Frequency = %d', thisFreq);
    title(caption, 'FontSize', 15);
    drawnow;
end

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Image Analyst 2022-11-22

I could but since it seems like your homework I don't want to get you into trouble by having you turn in my code as your own. I don't want you to get expelled! Try square function in the Signal Processing Toolbox.

Boyi 2022-11-22

yep I understand .because it is my first time using Matlab, I am very unfamiliar with how to use it, but thank you for your reply, it was very helpful.

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Answer 2

John D'Errico 2022-11-22

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https://ww2.mathworks.cn/matlabcentral/answers/1859733-i-want-to-build-the-square-wave-build-a-6-subplot-figure-to-show-the-time-domain-and-use-respectiv#answer_1108503

Solve a problem that is too large for you to handle by breaking it up into small enough chunks to handle.

Do you know how to use subplot? Clearly, you know about subplots. So read the help. Look at the examples.
Do you know how to plot a square wave? It sounds like you are asking how to use an FFT, So learn how to use an FFT to solve the problem for one case, then using a loop, solve it 6 times.