How to make M-File with function and "header"

Hello, I am facing a little problem as i describe:

I need to make .m file with function that receives data compute it and give back the result, this is easy (I know how to make this). But in this M-file must be included names of parameters of this function and their default values that I can access from another M-file.

for example:

function [m,s] = func1(arg1,arg2,arg3)
   %calculation here
   [m,s];
end

and the "header" in same M-file should give:

• arg1,arg2,arg3 as strings
• and default values of arg1,...,arg3 as number

when other M-file ask for them

Is this possible and how to make it?

[Jan]

I cannot imagine in which situation this could be useful. What does "header" exactly mean and how does it "give"?

Please use meaningful tags.

Answer 1

[Jan]

Perhaps you want:

function [m,s] = func1(arg1,arg2,arg3)
  if nargin == 0
     % Reply names of inputs and default values:
     m = {'arg1','arg2','arg3'};
     s = {1,2,3};
     return;
  end
  %calculation here
  [m,s];
end

Are you really sure that this is useful? The internally used names of the variables in the input list should not matter in the caller.

Answer 2

[Youssef Khmou]

hi Micheal,

For example in C/C++, a header file contains predefined function such that including a header file ( example "math.h") in Main file imports the predefined functions, but here using Matlab, you can use nested functions and/ or external functions and /or Mex files written in C/C++ :

example :

 %-------------------------------------------------

   function Y=function_Name(a,b)

   n=size(a);
  %  .......
  % ........
  Y=Mean_Modulus(a,b);
   % Nested function 
   function Z=Mean_Modulus(a,b);
      Z=mod(a,b);
      Z=mean(Z(:));
      return
 %-------------------------------------------
So nested functions can replace header Files , that is  my personal  approach

I hope this helps