Matlab GUI set error

Hi,

I keep getting this error and I don't know why. Or I know what is causing it but don't know how to resolve it. I need to load a .mat file which has a variable within called sMap. But if I load this file, the handles.box causes an error with the following remark.

Reference to non-existent field 'box'.

How can I load this mat file and still have access to the box.

= = =

The code is as follows:

% --- Executes just before UnsupervisedRecognitionEngine is made visible.
function UnsupervisedRecognitionEngine_OpeningFcn(hObject, eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% varargin   command line arguments to UnsupervisedRecognitionEngine (see VARARGIN)

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

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes UnsupervisedRecognitionEngine wait for user response (see UIRESUME)
% uiwait(handles.figure1);

% --- Outputs from this function are returned to the command line.
function varargout = UnsupervisedRecognitionEngine_OutputFcn(hObject, eventdata, handles) 
% varargout  cell array for returning output args (see VARARGOUT);
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Get default command line output from handles structure
varargout{1} = handles.output;

% --- Executes on button press in pushbutton1.
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)
B = xlsread('animals_data_newanimal.xlsx');
sDataStr_rec = som_data_struct(B);
sDataStr_rec=som_normalize_data(sDataStr_rec,'som_var_norm');
load('e:\matlab\ute01\animals.mat');

rec_bmu = som_bmus(sMap, sDataStr_rec);

n = strcat('The Best Matched Neuron is: ', num2str(rec_bmu));

set(handles.box,'string', n);

function box_Callback(hObject, eventdata, handles)
% hObject    handle to box (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of box as text
%        str2double(get(hObject,'String')) returns contents of box as a double

% --- Executes during object creation, after setting all properties.
function box_CreateFcn(hObject, eventdata, handles)
% hObject    handle to box (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end

Answer 1

[Image Analyst]

This link will help you solve this problem: http://blogs.mathworks.com/videos/2012/07/03/debugging-in-matlab/. Basically set a breakpoint at the line it gives you an error at, examine the handles structure, and see that box is not a member of handles. My guess are that the load() statement loads a handles that blows away your existing handles, or that you have a "clear" or something similar in there somewhere.

[Vineet Guru]

Hi Image Analyst,

Thanks for your answer. I actually found the answer on another blog query to which you responded suggesting how to pass variables between functions. This helped.