Creating a counter loop in MatLab, GUI?

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Amed
Amed on 25 Jan 2013
Edited: Irwin2020 on 22 Nov 2018
Hello, i'm trying to create a loop counter that will add increments of 1 every time I click a pushbutton. I don't really have any code as of yet since i'm new to programming but i've figured how to detect the button being pushed, and display a number in the static text. It keeps displaying '1', how do I display 1,2,3,.....n for every push? Here is what I have so far. Thanks a bunch
a = 0;
if (handles.pushbutton5)
a = a + 1;
set(handles.text8,'string',a);
end;
  3 Comments
Wouter
Wouter on 7 Nov 2013
And what if I want the option to count backwards?
I've tried creating a second pushbutton that produces:
counter = get(hObject, 'UserData') - 1;
However, no effect.

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Accepted Answer

Jan
Jan on 29 Jan 2013
I would avoid mixing the string and the numerical representation, although both are equivalent in this case. So you can add in the opening function:
set(handles.pushbutton5, 'UserData', 0);
and in the callback of this pushbutton:
function pushbutton5_Callback(hObject, EventData, handles)
counter = get(hObject, 'UserData') + 1;
set(hObject, 'UserData', counter);
set(handles.text8, 'String', sprintf('%d', counter));
If the field "text8" is missing, see FAQ: incomplete handles struct
  4 Comments
Irwin2020
Irwin2020 on 22 Nov 2018
Edited: Irwin2020 on 22 Nov 2018
Jan , can you please help me create a counter -loop adding strings (Hex values)?

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More Answers (3)

Azzi Abdelmalek
Azzi Abdelmalek on 25 Jan 2013
set(handles.text8,'string',num2str(a));
  5 Comments
Azzi Abdelmalek
Azzi Abdelmalek on 25 Jan 2013
In opening function initialize
Set(handles.text8,'string','0')

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Amed
Amed on 25 Jan 2013
Edited: Amed on 25 Jan 2013
Anybody else?
i initialized it as
set(handles.text8,'string','0')
a = str2double(get(handles.text8,'string'));
if (handles.pushbutton5)
a = a + 1;
set(handles.text8,'string',a);
end;
but get a constant '1' answer every click.. it will not add +1 to each click and display
  1 Comment
Azzi Abdelmalek
Azzi Abdelmalek on 29 Jan 2013
Edited: Azzi Abdelmalek on 29 Jan 2013
The initialization is not in the right place. You should do it in your opening function, not in your pushbutton function

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Amed
Amed on 29 Jan 2013
Anybody else have any ideas? Still not solved
  2 Comments
simran
simran on 28 Apr 2013
put your initial value for counter in Property Inspector's User data property but not in pushbutton callback function. This will increment counter on every click of push button.

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