why in gui program Preprocessing Callback might be unused is shown as an error..???

function main_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 main (see VARARGIN)

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

% Update handles structure guidata(hObject, handles); set(handles.figure1,'Name','Multimodel Biometric Recognition'); % UIWAIT makes main wait for user response (see UIRESUME) % uiwait(handles.figure1);

% --- Outputs from this function are returned to the command line. function varargout = main_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;

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

% -------------------------------------------------------------------- function Gait_Callback(hObject, eventdata, handles) % hObject handle to Gait (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) global input1

[f1 p1] = uigetfile( 'Gait\*.bmp', 'Choose any Gait' ); input1=imread([p1 f1]);

axes(handles.GaitImg); imagesc(input1); axis off;axis square; title('Input Gait Energy Image','fontsize',12,'fontname','Times New Roman','color','Black');

% -------------------------------------------------------------------- function Footprint_Callback(hObject, eventdata, handles) % hObject handle to Footprint (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) global input2

[f p] = uigetfile( 'Foot print\*.bmp', 'Choose any Footprint' ); input2=imread([p f]);

axes(handles.FootImg); imagesc(input2); axis off;axis square; title('Input Footprint','fontsize',12,'fontname','Times New Roman','color','Black');

% -------------------------------------------------------------------- function Voice_Callback(~, ~, handles) % hObject handle to Voice (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) global input3

[f p] = uigetfile( 'Voice\*.wav', 'Choose any Voice' ); input3=wavread([p f]);

axes(h(handles.VoiceInp)); plot(input3);grid on; xlabel('Time(sec)','fontsize',12,'fontname','Times New Roman','color','Black'); ylabel('Amplitude(Volt)','fontsize',12,'fontname','Times New Roman','color','Black'); title('Input Voice','fontsize',12,'fontname','Times New Roman','color','Black');

% -------------------------------------------------------------------- function Preprocessing_Callback(~, ~, handles) % hObject handle to Preprocessing (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) global input1 input2 input3 pre1 pre2 pre3

pre1=medfilt2(input1); pre2=medfilt2(input2); hz = 8000; [S_numer, S_denom] = butter(5, [100/hz 350/hz]); pre3 = filter(S_numer, S_denom, input3);

axes(h(handles.PGaitImg)); %#ok<MAXES> imagesc(pre1); axis off;axis square; title('Preprocessed Gait','fontsize',12,'fontname','Times New Roman','color','Black');

axes(h(handles.PFootImg)); imagesc(pre2); axis off;axis square; title('Preprocessed Foot Print','fontsize',12,'fontname','Times New Roman','color','Black');

axes(h(handles.PVoiceInp)); plot(pre3);grid on; xlabel('Time(sec)','fontsize',12,'fontname','Times New Roman','color','Black'); ylabel('Amplitude(Volt)','fontsize',12,'fontname','Times New Roman','color','Black'); title('Preprocessed Voice','fontsize',12,'fontname','Times New Roman','color','Black');

[Rizwana]

http://www.mathworks.in/matlabcentral/fileexchange/23230-master-gui-with-ease

learn with simplicity... thumb rule for learning new job. one hour after reading this pdf, you will stop using guide.

[Geoff Hayes]

kasthuri - where is the error? More likely it will be shown as a warning that the function is unused. Has it been assigned as a callback to any widget in your GUI?