Finding minimum points in a plot.
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I want only the minimum points in the blue plot. I want an almost parabolic curve open downwards. ' islocalmin ' and , 'envelope' functions are not woking. How could I acheive it?
the orange plot is it's Savitzky–Golay filter output.
6 个评论
Adam
2019-8-16
If you have the Signal Processing Toolbox then
doc findpeaks
should find all the minima for you if you give it the negation of your data.
KALYAN ACHARJYA
2019-8-16
Also, Minimum of blue line plot data vector
Abhiraj Gupta
2019-8-20
Rik
2019-8-20
Attach data or code to create some.
Adam
2019-8-20
Well, if 'not working' is as much information as you want to give I guess the question is at an end?!
Adam
2019-8-20
And the code you are running is what?!
回答（1 个）
Rik
2019-8-16
0 个投票
The movmin function might work for you. If you want us to help with the tweaking, you will have to attach your data or some code that can generate plausible data.
2 个评论
Abhiraj Gupta
2019-8-20
Rik
2019-8-20
You didn't provide any method of using your raw data to get the plot, nor the code you tried. This way it is very difficult to help you.
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2019-8-16
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