Plotting Square wave from pressure signal

Question

Tehreem Syed 2020-8-17

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https://ww2.mathworks.cn/matlabcentral/answers/580683-plotting-square-wave-from-pressure-signal

评论： Tehreem Syed 2020-8-17

Hi,

I have pressure signal collected from the sensors placed under foot. Findpeaks function was used to detect points (c and d). Point ( and b) are the zero crossing. I want to plot sqaure wave from this signal for the following interval:

If pressure signal is greater than point (a) and equal to or less than point d

new_signal = 1;

else if pressure signal is greater than point (b) and equal to or less than point f

new_signal = 0;

How i can plot this in matlab?

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Answer 1

Antonio Ciociola 2020-8-17

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https://ww2.mathworks.cn/matlabcentral/answers/580683-plotting-square-wave-from-pressure-signal#answer_481209

编辑：Antonio Ciociola 2020-8-17

在 MATLAB Online 中打开

This can be done transforming your signal into an arry of logic values:

sig_bool = (signal>a & signal<=d);

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Tehreem Syed 2020-8-17

Thanks for your answer. We also have point c. I am detecting peaks using findpeaks function. I am getting both point c and d. I am not getting the required result using this logic.

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