How to call functions from another m file

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Sergey Zaitsev
Sergey Zaitsev on 9 Mar 2017
Commented: Steven Lord on 27 Jul 2020
I have two scripts. In first script I have some functions.
script1.m:
function res = func1(a)
res = a * 5;
end
function res = func2(x)
res = x .^ 2;
end
In second script I call these functions. How to include script1.m in second script and call functions from script1.m?

Accepted Answer

Adam
Adam on 9 Mar 2017
You can't if the functions are defined as local functions in the script1 file.
Just put the functions in their own separate file (of the same name as the function and on your path) if they are being used by both script1 and script2.

More Answers (1)

Mahmoud Khaled
Mahmoud Khaled on 28 Mar 2018
Edited: Mahmoud Khaled on 27 Jul 2020
You can add them to a MATLAB class. Then instantiate an object of this class and call any of the functions.
It should be something like this:
In a separate file (ex, functionsContainer.m)
classdef functionsContainer
methods
function res = func1(obj,a)
res = a * 5;
end
function res = func2(obj,x)
res = x .^ 2;
end
end
end
Then, in your script create an object:
myObj = functionsContainer;
Finally, call whatever function you like:
res1 = myObj.func1(a);
res2 = myObj.func2(x);
  3 Comments
Steven Lord
Steven Lord on 27 Jul 2020
If you wanted to do this I'd make those functions Static, since they don't need or use any state from the object itself.
classdef functionsContainer
methods (Static)
function res = func1(a)
res = a * 5;
end
function res = func2(x)
res = x .^ 2;
end
end
end
Use:
y = functionsContainer.func1(2) % 10
Another way to make local functions available outside their file is to have the main function return function handles to those local functions.
function [fh1, fh2] = example328959
fh1 = @func1;
fh2 = @func2;
end
function y = func1(a)
y = 5*a;
end
function z = func2(b)
z = b.^2;
end
Use as:
[f1, f2] = example328959;
f1(2) % also 10

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