Matlab call a function from a function

Question

I have two functions:

function [] = func_one()
     S.pb = uicontrol('style','push','unit','pix','posit',[20 20 260 30],
                      'string','Print Choices','callback',{@func_two,S});

and I have the second function:

   function [a] = func_two(varargin)
       a = 'alon';
   end

I want func_one to return the variable a of func_two. How can I do that please?

I tried:

 function [a] = func_one()

But I guess I have to do something with 'callback',{@func_two,S})

Thank you all!

@Memming, I changed my question. if you can, please look at this — Alon Shmiel
– Alon Shmiel, Commented May 24, 2012 at 21:08

kitchenette · Accepted Answer · 2012-05-24 21:32:46Z

3

If, as you say, you want func_one to return the value a in func_two then the easiest way to do this without using a callback is:

function [a] = func_one()
     S.pb = uicontrol('style','push','unit','pix','posit',[20 20 260 30],
                      'string','Print Choices');

     a = func_two()

The above will allow you to say run a=func_one and a will be the string 'alon'.

If you really really want func_two() to be a callback of your pushbutton, and you want a='alon' to be assigned in the workspace of func_one (the function that calls func_two) then put this in func_two

assignin('caller','a',a)

And if neither is what you want, then maybe you can indicate why you want func_one to return what func_two returns - like the exact interaction you are hoping to have with your GUI and how it differs from what you're actually experiencing.

edited May 24, 2012 at 21:32

answered May 24, 2012 at 21:15

kitchenette

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Comments

Amro · Accepted Answer · 2012-05-25 01:30:51Z

2

If you are designing a GUI programmatically, I suggest you use nested functions to share data. Example:

function IncrementExample()
    x = 0;
    uicontrol('Style','pushbutton', 'String','(0)', ...
        'Callback',@callback);

    function callback(o,e)
        %# you can access the variable x in here
        x = x + 1;

        %# update button text
        set(o, 'String',sprintf('(%d)',x))
        drawnow
    end
end

enter image description here

answered May 25, 2012 at 1:30

Amro

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