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Is it possible to call a subfunction inside a function mscript?

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Ray Lee
Ray Lee on 16 Feb 2015
Edited: Stephen Cobeldick on 17 Feb 2018
Is it possible to call a subfunction inside a mscript function and get the returned value?
e.g., the content of 'func.m' as below
function b = func(a)
b = subfunc(a) +1;
function c = subfunc(a)
c = a*2;
Can I call subfunc directly in the matlab workspace.

  3 Comments

Ray Lee
Ray Lee on 17 Feb 2015
For instance, a function Func is stored in file 'Func.m'. In 'Func.m', there is a function SubFunc called by the main Func function. I wanna if I can excute the SubFunc function in 'Func.m' directly.
Stephen Cobeldick
Stephen Cobeldick on 18 Feb 2015
MATLAB does not mention "subfunctions". Other functions in the same Mfile are either local functions or nested functions.
Do not call any function a "script", as a script is something quite different from a function.
"I wanna if I can excute the SubFunc function in 'Func.m' directly": lets look at the two possible cases for this:
  • If Func is the main function on that Mfile, then it can call any local function in the same Mfile.
  • If Func is a script then from version R2016b you can add local functions. With earlier versions doing so will throw an error.

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Accepted Answer

Thorsten
Thorsten on 16 Feb 2015
No. You have to create a separate mfile that can be called by your mscript.

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More Answers (2)

Jan
Jan on 25 Jan 2017
You can do this by a wrapper:
function Fcn = main
Fcn.func = @func;
Fcn.subfunc = @subfunc;
function b = func(a)
b = subfunc(a) +1;
function c = subfunc(a)
c = a*2;
Now you can call from the outside:
Fcn = main();
Fcn.func(1)
Fcn.subfunc(2)

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Adam
Adam on 16 Feb 2015
Edited: Adam on 18 Feb 2015
You can call a sub-function from a main function in an m-file.
You cannot call a sub-function from a script (what would the function be 'sub' of?!). If you need to then just turn your script into a function.
Edit: In response to your edited question, then Yes, what you are doing is creating a function file and then within it defining subfunctions which are only accessible to the main function of that file.
This does seem like a question that you could have got the answer to yourself instantly though by simply putting that code in a file and running it!

  1 Comment

Ray Lee
Ray Lee on 20 Feb 2015
Of course I know it is impossible to call the local function by excuting subfunc() from outside.
I'm asking if there is a way to call a local function from outside.

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