MATLAB: How to run the callback routine for a pushbutton from the command line in MATLAB 7.0.4 (R14SP2)

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I want to execute a GUI object callback function from the MATLAB Command line, or another function.

Best Answer

One way to run the callback function from the Command Window is to run the GUI function with arguments including the appropriate callback function, the handle to the object associated with the callback function, the event, and the 'handles' structure.

The easiest way to obtain the necessary information is to make the 'handles' structure the output of the GUI code. To do this, change the following line in GUI create function "myGUI_CreateFcn":

handles.output = hObject;

handles.output = handles;

then execute the following at the MATLAB Command Prompt

h = myGui;
myGui('pushbutton1_Callback',h.pushbutton1,[],guidata(h.pushbutton1))

The above example executes the callback function for a pushbutton object with an object 'Tag' property set to 'pushbutton1'.

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You can add following code in OpeningFcn callback for creating a plot

h = [67, 32, 67, 87, 45, 89]; 
t = 1:6; 
axes(handles.axes1); 
plot(t,h);

MATLAB: How to update value of a variable when a button is pushed? What am I doing wrong in this code

You need to put a static text label on your GUI with a tag of txtValue (or whatever you want). Then in each callback where you want to change handles.value you need to have this:

handles.value = handles.value + 80; % Or whatever value you want.
handles.txtValue.String = sprintf('The Value now = %.1f', handle.value);
% Update handles structure
guidata(hObject, handles); % Not calling this was your problem.

Best Answer

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MATLAB: How to update value of a variable when a button is pushed? What am I doing wrong in this code

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