Passing two subfunction variables in GUI to another function

Good Afternoon All,

I have been searching matlab documentation and forums for a way to properly pass data from a subfunction to another function in a GUI. I have only found examples for one variable in a subfunction and I am not sure if the handles will work for two considering every attemp made the way I defined the handles only exist within the subfunction.

% --- Executes on button press in Bore_Profile_Generate_Pushbutton.
function Bore_Profile_Generate_Pushbutton_Callback(hObject, eventdata, handles)
% hObject    handle to Bore_Profile_Generate_Pushbutton (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Do simple equations and produce:

%Output results
angles = (prof(:,1))';
radius = (prof(:,2))';

%Then I try to use handles

handles.radius=radius;
handles.angles=angles;

Now I try to place it into a different function and fails.

% --- Executes on button press in Results_Analysis_Pushbutton.
function Results_Analysis_Pushbutton_Callback(hObject, eventdata, handles)
% hObject    handle to Results_Analysis_Pushbutton (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

%Running fft_coeff.m to obtain the Fourier Coefficients of Profile
%Radius and Angles are obtained from Bore_Profile_Generate_Pushbutton and
%N_terms are obtained from Results_Coefficients_Edit

radius = str2num(get(handles.radius));
angles = str2num(get(handles.angles));

Note that radius and angles are a 1 by n matrix.

Answer 1

[Sean de Wolski]

You'll have to store the new handles structure at the end of the pushbutton callback using:

guidata(handles.figure1,handles);

Where 'figure1' is the tag of your figure, whatever that may be.

[Melissa]

Thanks so much for your response. I tried and received the following error after running the file:

>> Bore_Distortion_Calculator Reference to non-existent field 'Bore_Distortion_Calculator'.

Error in Bore_Distortion_Calculator>Bore_Profile_Generate_Pushbutton_Callback (line 289) guidata(handles.Bore_Distortion_Calculator,handles);

Error in gui_mainfcn (line 96) feval(varargin{:});

Error in Bore_Distortion_Calculator (line 42) gui_mainfcn(gui_State, varargin{:});

Error in @(hObject,eventdata)Bore_Distortion_Calculator('Bore_Profile_Generate_Pushbutton_Callback',hObject,eventdata,guidata(hObject))

[Sean de Wolski]

Bore_Distortion_Calculator is the figure 'Tag'?

If you put a breakpoint on that line, push the button - then inspect the contents (fields) of the handles structure, is Bore_Distortion_Calculator a field of it?

[Melissa]

Again thanks for the help. It is the m file name so I was assuming that it is the tag name as well. I do not see Bore_Distortion_Calculator in the openfunction structure when I retrace things. Should I have used Bore_Distortion_Function_Output instead to add the handles?

[Sean de Wolski]

No, it won't be necessarily. Open the figure in GUIDE, right click on the figure somewhere to open the property inspector and look for the 'Tag' property. Default is 'figure1' I believe.

[Melissa]

Oh ha wow I did not know there was a tag for that. Thanks, I changed the tag and reran it only to receive the same error.

[Sean de Wolski]

Did you save AND close everything and then run it again?

If so, then put the break point on that line and see what the fields of handles are...

[Melissa]

You were correct again. I have that to work now when trying to get the data I receive the following errors:

Error using handle.handle/get
Invalid or deleted object.

Error in Bore_Distortion_Calculator>Results_Analysis_Pushbutton_Callback (line 110)
radius = get(handles.radius);

Error in gui_mainfcn (line 96)
        feval(varargin{:});

Error in Bore_Distortion_Calculator (line 42)
    gui_mainfcn(gui_State, varargin{:});

Error in @(hObject,eventdata)Bore_Distortion_Calculator('Results_Analysis_Pushbutton_Callback',hObject,eventdata,guidata(hObject))

Error while evaluating uicontrol Callback

[Sean de Wolski]

radius = handles.radius

[Melissa]

OMG it worked!!!!!!!!!!!!!!!

Thank you so much for your patience and time in assisting me.

[Sean de Wolski]

you're welcome!

Answer 2

[Matt Fig]

You add to handles, but then do not save handles. See the help for GUIDATA.

[Melissa]

Thank you so much for the response. I referenced teh GUIdata and typed in the following but still received an error.

%Output results
angles = (prof(:,1))';
radius = (prof(:,2))';
%Declaring output results to be used for Distortion Results
handles.radius=radius;
handles.angles=angles;
%Saving Handles to be used.
guidata(handles.Bore_Distortion_Calculator,handles)

[Matt Fig]

Use this instead:

guidata(gcbf,handles);  % No need to mess around with tags...

And if you still receive an error, show the error message!