meanfreq Command in Matlab

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jen Magnes
jen Magnes on 19 May 2018
Commented: jen Magnes on 3 Jun 2018
What is the code behind the meanfreq command. I understand how to calculate the meanfrequency; however, it is unclear to me how the graph with the meanfreq command is created.
  5 Comments
Rik
Rik on 19 May 2018
I thought you said you understood the method? Anyway, the actual implementation might be different for each release as the Mathworks team optimizes their functions. It is not my area of expertise, and I don't think this forum would be suited for that question anyway.
Also, could you please mark my answer as accepted answer?
jen Magnes
jen Magnes on 3 Jun 2018
As I said, I understand how mean frequency is estimated; nevertheless there are different methods. Which method is MatLab using?

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Answers (4)

Rik
Rik on 19 May 2018
With some functions, you can take a look at the underlying code with the edit command. You're in luck: meanfreq is such a function. This will help you open the function:
edit meanfreq
WARNING: do NOT edit any Mathworks function and don't replace the files. If you want something different from a provided function, save the edited code under a different name. Not doing so might lead to crashes and other unexpected behavior. Note that copying code under some circumstances might not be legal, as I would expect these functions to be copyrighted.

jen Magnes
jen Magnes on 19 May 2018
If you look back, I said that I understand how to calculate the meanfreq - that is a single number. I don't understand how the graph using the meanfreq is calculated.

jen Magnes
jen Magnes on 20 May 2018
What method does 'meanfreq' use to calculate the psd?

jen Magnes
jen Magnes on 20 May 2018
Nevermind. I figured it out.

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