Radio button status call in Push Button matlab gui

I have 2 Radio buttons R1,R2 & two Push Buttons PB1, PB2. Either R1 or R2 can be selected when R1 is selected it uploads few image mat files in PB2 & when PB2 is pressed it processes the images. Similarly when R2 is selected it loads few different mat files to PB2 but now PB1 can be used by user. When R1 is selected PB1 can't be used.

Here R1 is related to PB2 only

R2 is related to PB1 & PB2

function pushbutton1_Callback(hObject, eventdata, handles)

if get(handles.R1,'Value')

% load 4 mat files

end 

if get(handles.R2,'Value') 

% load 5 mat files

end

Can anyone please help me with

1. How we can ensure that only one radio button is selected at a time.
2. above code is not working, point mistake or improve it.

Answer 1

[Image Analyst]

In GUIDE, you can create a panel that is a button group. Put your radio buttons inside of that. If you do that, it will automatically take care of toggling the radio buttons so that only one is "true" and the others are all false/off. In your pushbutton callbacks, you can still get the values of the radio buttons, like

if handles.R1.Value
   % load 4 mat files
end

Like you said.

Answer 2

[Walter Roberson]

See uibuttongroup()

Also, to disable a button, set() its 'enable' property to 'off'