How do I pass variables from one function to another in MATLAB GUIDE GUI's?

I have a GUI with two buttons.

I define a variable, A, in the first button when loading a file. I need access to that variables value in the callback for the second button.

Is there a way to pass this without using a global variable or putting it in the handles structure with GUIDATA function?

Answer 1

[Doug Hull]

This video helps you with the commands you need (getappdata, setappdata) http://blogs.mathworks.com/videos/2005/10/03/guide-video-part-two/ http://www.mathworks.com/help/techdoc/ref/getappdata.html http://www.mathworks.com/help/techdoc/ref/setappdata.html

Here is the documentation on scope of variables. http://www.mathworks.com/help/techdoc/matlab_prog/bresuxt-1.html

[danny agus]

i want to ask

why you put 0 in the handle ?

setappdata(0 , 'hMainGui' , gcf);

and what's the different with this ?

setappdata(gcf, 'thresh' , 121);

i have read the explanation from help.. but i still confuse

[danny agus]

about this code

hMainGui = getappdata(0, 'hMainGui');

%you want to get the data from hMainGui ?

setappdata(hMainGui, 'fileName', fileName);

%you want to set a data, from fileName to fileName ?

Answer 2

[Image Analyst]

See the FAQ for several ways to do it: http://matlab.wikia.com/wiki/FAQ#How_can_I_share_data_between_callback_functions_in_my_GUI.3F