Local functions are not working in MatLab R2022a

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Jonne Klockars
Jonne Klockars 2022-6-9
编辑： Walter Roberson 2024-8-27
I'm trying to write local functions in the way instructed in this video: https://www.youtube.com/watch?v=f0zKcuP3Wc0&list=PLlvaivyRxHmdTvpNBe4gKWrOBrcuxhpsl&index=48, beginning at 5:50. When running the code below, my MatLab R2022a says Unrecognized function or variable 'mymean'. What am I missing here?
x = 1:10;
n = length(x);
avg = mymean(x,n)
function a = mymean(v,n)
a = sum(v)/n;
end
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Stephen23
Stephen23 2022-6-9
@Jonne Klockars: how are you running the script? Please show the exact code you use to run your file.
Jonne Klockars
Jonne Klockars 2022-6-9
The exact code is in the question. I have nothing else in the file. I select it all and press F9.

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Stephen23
Stephen23 2022-6-9
编辑：Stephen23 2022-6-9
"I select it all and press F9."
That will not work.
You need to run the script by calling it by name from the command line:
>> test
MATLAB is a bit more strict with function definitions than some younger languages around these days, where you can just define anything on the fly. Selecting function code and pressing F9 will not define the function and then let you call it. MATLAB simply does not work that way. You need to call the function or run the script that calls the function.
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Jonne Klockars
Jonne Klockars 2022-6-9
Also selecting the green play-symbol (Run) works. I watched the video series (link in question) before beginning the exercises and saw the instructor using F9. I'm quite sure she doesn't mention about the difference between it and Run / Command Line in any of the 60 videos.
Yu Li
Yu Li 2024-8-27
some keyboard include a bottom "fn", when you accidently click that bottom, F9 not work. you need to press "fn" buttom agian to recover that.

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