CODEWITHSUNDEEP
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user3667217
user3667217

Reputation: 2192

Storing/retriving data to/from handles from helper function in a Matlab GUI created by GUIDE

I made a GUI program to process and view images. I wrote some of the codes that are used more than once in helper functions those are called within the GUI function callbacks to make it more concise.

However, I've a trouble with saving changes to handles structure if I write my program in this way. The calculation in the helper function was done correctly when I examined it in debugging mode. But the changes to the handles structure was not updated.

I'm wondering of how I can fix this?

Code : 

function ProcessData_Callback(hObject, eventdata, handles) % GUI callback
  val = get(handles.menu, 'Value');
  str = get(handles.menu, 'String');
  switch str{val}
    case 'Mode1'
      FRETCalculator1(handles);
    case 'Mode2'
      FRETCalculator2(handles);
  end

function FRETCalculator1(handles) % Helper function
  for indT = 1:size(handles.Data,1)
    for indZ = 1:size(handles.Data,3)
        handles.Data{indT,3,indZ} = handles.Data{indT,1,indZ}./(handles.Data{indT,2,indZ}+1);
    end
  end
  guidata(handles.mainGUI, handles);

Upvotes: 1

Views: 94

Answers (1)

Ghislain Bugnicourt
Ghislain Bugnicourt

Reputation: 334

This line of yours should actually save the changes : 

guidata(handles.mainGUI, handles);

Now if you want to use the handles that were modified after calling your function, you have to actualize them : 

FRETCalculator1(handles);
handles=guidata(handles.mainGUI);
% ...code using modified handles

Actually, handles are modified in the figure but not in the code executing after the function call.

I hope that was clear. :)

Upvotes: 1

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