Finding maximum and minimum
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Hi, I have a question regarding how to find all the maximums on the following graph, because it is not just one. It represents an earthquake shaking a building and the acceleration decreases by a certain amount of damping.
The time interval is not identical.
回答（1 个）
If you have the Signal Processing Toolbox then you can use findpeaks. To find the minima simply invert the data.
Otherwise search for "peaks" or "peak finder" on MATLAB File Exchange:
You might also be like to have a look at envelope fitting tools.
2 个评论
Tsvetan Donov
2016-8-10
@Tsvetan Donov: You should start by reading the findpeaks documentation. Why else do you think I gave you that link? The documentation explains what syntax is allowed, and has examples for you to try out! Probably you can simply call:
[pksMax,locsMax] = findpeaks(data) % maxima
[pksMin,locsMin] = findpeaks(-data) % minima
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2016-8-10
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