Expression not evaluated at callback statement - matlab

Question

I am building a GUI in Matlab that plots different functions in different plots according to the selected RadioButton. It looks like:
I want to select at which axes should the function be plotted. Therefore I need to know which of the RadioButton is selected. Then:
% Set default RadioButton
set(h.r1,'Value',1);
set(h.r2,'Value',0);
set(h.r1,'Callback',{#myRadioButton, h.r2}); % Set the other RadioButton to false
set(h.r2,'Callback',{#myRadioButton, h.r1}); % Set the other RadioButton to false
Then I call press one of any Button and call my plotting function which (should) evaluate(s) which axes it has to use:
set(h.b1,'Callback',{#myPlotFunction,...
get(h.r1,'value')*h.axes1+get(h.r2,'value')*h.axes2, h.x});
The problem is that I always get h.axes1 as input, no matter which RadioButton I choose.
Is this due to the definition of default values for RadioButton?

Answer 1

EDIT
Another edit: Ok, now we're dynamically assigning the button handles and xdata inside of the radiobutton callback.
Due to some peculiarities with MATLABs handling of function handle arguments (see comments), my first answer doesn't work. This one does.
set(h.r1,'Callback',{#TurnOffRadio, h.r2, h.axes1, h.x});
set(h.r2,'Callback',{#TurnOffRadio, h.r1, h.axes2, h.x});
function TurnOffRadio(hObject, eventdata, radiohandle, axeshandle, xdata)
set(radiohandle, 'Value', 0);
set(h.b1,'Callback',{#myPlotFunction, axeshandle, xdata});
%// Repeat set statement for each button.
end %// You may nee to remove this end, depending on your conventions.
function myPlotFunction(hObject, eventdata, axeshandle, xdata)
%// do whatever here with axeshandle and xdata.
end %// You may nee to remove this end, depending on your conventions.
I've set up a toy example and run this exact code, and it produces the desired effect.
Let me know if this still doesn't solve the problem, and I'll keep digging.
Original
You're close. The problem is that when you set a callback function using a function handle and arguments, the arguments always remain what they were at the time that the callback was set. Essentially, they are passed only once, not dynamically each time the callback is executed. To work around this, just set the callback to turn off the other radio button directly using set.
set(h.r1,'Callback',{#set, h.r2, 'Value', 0});
set(h.r2,'Callback',{#set, h.r1, 'Value', 0});
Let me know if that doesn't work for you. Good luck!