MATLAB: Writing in a listbox

Question

I am trying to write a list in a listbox.

code:

function listbox1_Callback(hObject, eventdata, handles)
% hObject    handle to listbox1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% Hints: contents = cellstr(get(hObject,'String')) returns listbox1 contents as cell array
%        contents{get(hObject,'Value')} returns selected item from listbox1
error = getappdata(0, 'error_norm');
rows = size(error,1);
for i = 1:rows
  set(handles.listbox1,'string',strcat('filt_',num2str(i)));
  for j = 1:length(error)
      set(handles.listbox1,'string',strcat('sig_',num2str(i),'_',num2str(j)));
      for k = 1:length(error{j}.main)
          set(handles.listbox1,'string',strcat('seg_',num2str(i),'_',num2str(j),'_',num2str(k)));
      end
  end
end

where 'error' is a array of structure . i want to write on list box something like this:

filt_1
sig_1_1
seg_1_1_1
seg_1_1_2
sig_1_2
seg_1_2_1
seg_1_2_2

but apparently, 'set' function overwrites, so all i am getting is only 1 element and the last element.

How do i make it write all of it, any help will be appreciated.

Answer 1

You need to create a cell array of strings first, and then set() that cell array as the String property of the handle.