MATLAB: How do you create a push button that saves data from a GUI

excelguiMATLAB Builder EXpushbuttonxlswrite

How to do it?

Best Answer

deenessen - you haven't given us much to work on, but presumably your GUI has a button that, when pushed, you want to save some data to an Excel file. Assuming that GUIDE is being used, then your pushbutton callback would look like

function pushbutton1_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% get and format your data
myData = randi(42, 10,3);
% write your data to file
writematrix('myFile.xlsx', myData);

Depending upon your version of MATLAB, you could use writematrix or xlswrite.

Related Solutions

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.

MATLAB: How to pass a struct between callbacks in GUI

Valentino - just save the structure to handles in one callback so that the other callback has access to it. For example, if the following is the callback to choose and load the contents of a file

 function pushbutton1_Callback(hObject, eventdata, handles)
 % choose the file
 % load the data into a structure myData
 % add the structure to handles
 handles.myData = myData;
 % save the updated structure
 guidata(hObject,handles);

Now in your other callback, you can access this structure directly as

 function pushbutton2_Callback(hObject, eventdata, handles)
 if isfield(handles,'myData')
     % do something with myData
 end

Try implementing the above and see what happens!

Best Answer

Related Solutions

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

MATLAB: How to pass a struct between callbacks in GUI

Related Question