MATLAB: Keeping data w/i a single function of a MATLAB GUI

Question

Greetings, my question is as follows: I'm trying to make a function that will store an amount of data w/i a matrix, within a MATLAB GUI. The idea is that the user presses a button ("Advance"), which increases the iteration number. The iteration number is shown in the textbox. I'd like to maintain a matrix (h.h) that keeps track of the number of iterations. So, for five iterations, I would ideally get:

h.h = [1 1 1 1 1; 2 2 2 2 2; 3 3 3 3 3; 4 4 4 4 4; 5 5 5 5 5];

The problem I'm getting, is that during the 2nd iteration, the data from the 1st iteration will be deleted. So, the data that I see is, instead,

h.h = [0 0 0 0 0; 0 0 0 0 0; 0 0 0 0 0; 0 0 0 0 0; 5 5 5 5 5];

My script is as follows: . . .

if true
function varargout = updater(varargin)
% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                 'gui_Singleton',  gui_Singleton, ...
                 'gui_OpeningFcn', @updater_OpeningFcn, ...
                 'gui_OutputFcn',  @updater_OutputFcn, ...
                 'gui_LayoutFcn',  [] , ...
                 'gui_Callback',   []);
if nargin && ischar(varargin{1})
  gui_State.gui_Callback = str2func(varargin{1});
end

if nargout [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:}); else gui_mainfcn(gui_State, varargin{:}); end % End initialization code – DO NOT EDIT

function updater_OpeningFcn(hObject, eventdata, handles, varargin)

% Choose default command line output for updater handles.output = hObject;

% Update handles structure guidata(hObject, handles);

function varargout = updater_OutputFcn(hObject, eventdata, handles) % Get default command line output from handles structure varargout{1} = handles.output;

function ITERinput_CreateFcn(hObject, eventdata, handles) if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor')) set(hObject,'BackgroundColor','white'); end

function ITERinput_Callback(hObject, eventdata, handles) coinno = str2num(get(hObject,'String')); if (isempty(coinno)) set(hObject,'String','0') end guidata(hObject, handles);

function ITERbutton_Callback(hObject, eventdata, handles) currentCounterValue = str2double(get(handles.ITERinput, 'String')) newString = sprintf('%d', int32(currentCounterValue +1)); set(handles.ITERinput, 'String', new

if true
  % code
endString );

h.h(currentCounterValue,:) = [currentCounterValue currentCounterValue currentCounterValue currentCounterValue currentCounterValue] h.h end

. Thank you! Also, sorry for the below code not coming out as it should have. I'm not sure how much to include from a GUI, but I can send files if needed.

Answer 1

You need to put h.h into the handles variable:

handles.h.h = .....

and add

guidata(hObject, handles);

at the end of ITERbutton_Callback to save it.