MATLAB: Separate functions or sub-functions

functionMATLABsubfunction

Dear all,

I have a main function and several sub-functions. Usually, I keep the function and the sub-functions in one .m file. alternatively, I also can save each sub-function as a separate .m file, and then invoke them in the main function.

my question is what the difference between this two way. for example, time consuming, memory needs etc…

thank you. George

Best Answer

Subfunctions cannot be accessed (without a handle) from outside the mfile. So, if you need (convenient) access to them outside the mfile, it is best not to make it a subfunction.

Subfunctions also do get higher precedence on the search path, but I doubt you would ever see a consequential performance difference because of that.

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