"the scope of variable spans multiple functions matlab"

Can somebody tell me what is this message in "blue" variable "the scope of variable spans multiple functions matlab" ??

is it a nested function??

i have this code in attached image

[Stephen23]

Those variables are used in nested functions. Nested functions are an intuitive and convenient way to simplify passing data between workspaces. Note that powutil4's alignment is misleading: the default MATLAB code alignment indents nested functions, which makes it clear which functions in a file are nested and which are local:

https://www.mathworks.com/help/matlab/matlab_prog/types-of-functions.html

Answer 1

[Stephan]

Hi,

yes, it is due to the nested functions. It is one possible way to avoid global variables. There is nothing wrong with it. The documentation suggests this as a proper way instead of the usage of global variables. So no worry.

Best regards

Stephan

[Panos Raptis]

Thanks a lot for quick answer

Ok these code its not mine and i want to adapt it on my data, these variables (blue) in pic which i attach it is returns from excel matrix....maybe you know how to span a variable with data from excel matrix?

[Stephan]

there a several ways. one idea could be xlsread or readtable.

[Panos Raptis]

okay and how i will define nested and parent funtions?

[Stephan]

https://de.mathworks.com/help/matlab/matlab_prog/nested-functions.html

[Panos Raptis]

Thanks a lot

[Stephan]

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