MATLAB: Looking for help with deleting stored variables

clear valuesgui inputsMATLAB

I have created a gui based on matlabs guide, and have been storing the inputs into a separate location named userdata (i think is the best way to put it).

For Example:

    Number1 = str2num(get(handles.Editbox_Number1,'String'));
    handles.userdata.Number1 = Number1;
    guidata(hObject,handles);

I was just looking for a way to clear all the values (ie. Number1, Number2) that are stored in userdata when a 'clear' button in the gui is selected, so that when i run handles.userdata it returns blank. Thanks for any advice.

Best Answer

handles.userdata = struct();
guidata(hObject, handles);

Related Solutions

MATLAB: Save a structure that is within a structure

You can save a structure from within a structure only in the very limited case that the parent structure is a scalar structure array and that all fields within the parent structure are to individually become variables in the mat file. The handles structure is a scalar structure so it meets the first requirement but it is quite unlikely that you want to save all parts of it to become individual variables.

It is likely that you will need to save the content of the substructure to a variable and then save the variable.

Car = handles.Car;
save(FullPath, 'Car')

The one exception I mentioned would look like

save(FullPath, '-struct', 'handles')

MATLAB: How to use local variable from GUI

All of that is unnecessary. Just check the values when you need them, or worst case, have a function to retrieve all of their values, like this:

function checkboxValues = GetCheckBoxValues(handles)
  checkboxValues (1) = get(handles.checkbox1, 'value');
  checkboxValues (2) = get(handles.checkbox2, 'value');
  checkboxValues (3) = get(handles.checkbox3, 'value');

Then just call that function whenever you need to get, use, or check the values:

checkboxValues = GetCheckBoxValues(handles);

No need for all of that complicated stuff you were doing in each individual callback.

Best Answer

Related Solutions

MATLAB: Save a structure that is within a structure

MATLAB: How to use local variable from GUI

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