Why my gui code is throwing error? Iam trying to import file. Its not reading my file

function varargout = gui_1(varargin)

% GUI_1 MATLAB code for gui_1.fig

% GUI_1, by itself, creates a new GUI_1 or raises the existing

% singleton*.

%

% H = GUI_1 returns the handle to a new GUI_1 or the handle to

% the existing singleton*.

%

% GUI_1('CALLBACK',hObject,eventData,handles,...) calls the local

% function named CALLBACK in GUI_1.M with the given input arguments.

%

% GUI_1('Property','Value',...) creates a new GUI_1 or raises the

% existing singleton*. Starting from the left, property value pairs are

% applied to the GUI before gui_1_OpeningFcn gets called. An

% unrecognized property name or invalid value makes property application

% stop. All inputs are passed to gui_1_OpeningFcn via varargin.

%

% *See GUI Options on GUIDE's Tools menu. Choose "GUI allows only one

% instance to run (singleton)".

%

% See also: GUIDE, GUIDATA, GUIHANDLES

% Edit the above text to modify the response to help gui_1

% Last Modified by GUIDE v2.5 12-Mar-2014 12:33:00

% Begin initialization code - DO NOT EDIT

gui_Singleton = 1;

gui_State = struct('gui_Name', mfilename, ...

                   'gui_Singleton',  gui_Singleton, ...

                   'gui_OpeningFcn', @gui_1_OpeningFcn, ...

                   'gui_OutputFcn',  @gui_1_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

% --- Executes just before gui_1 is made visible.

function gui_1_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 gui_1 (see VARARGIN)

% Choose default command line output for gui_1

handles.output = hObject;

% Update handles structure

guidata(hObject, handles);

% UIWAIT makes gui_1 wait for user response (see UIRESUME)

% uiwait(handles.figure1);

% --- Outputs from this function are returned to the command line.

function varargout = gui_1_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 filename_Callback(hObject, eventdata, handles)

% hObject handle to filename (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 filename as text

% str2double(get(hObject,'String')) returns contents of filename as a double

% --- Executes during object creation, after setting all properties.

function filename_CreateFcn(hObject, eventdata, handles)

% hObject handle to filename (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

function foldername_Callback(hObject, eventdata, handles)

% hObject handle to foldername (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 foldername as text

% str2double(get(hObject,'String')) returns contents of foldername as a double

% --- Executes during object creation, after setting all properties.

function foldername_CreateFcn(hObject, eventdata, handles)

% hObject handle to foldername (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

function sub_foldername_Callback(hObject, eventdata, handles)

% hObject handle to sub_foldername (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 sub_foldername as text

% str2double(get(hObject,'String')) returns contents of sub_foldername as a double

% --- Executes during object creation, after setting all properties.

function sub_foldername_CreateFcn(hObject, eventdata, handles)

% hObject handle to sub_foldername (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

% --- Executes on button press in PROCESS.

function PROCESS_Callback(hObject, eventdata, handles)

% hObject handle to PROCESS (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

filename = get(handles.filename,'String');

foldername = get(handles.foldername,'String');

sub_foldername = get(handles.sub_foldername,'String');

importfile(filename); %ERROR ON THIS LINE OF CODE...

function edit4_Callback(hObject, eventdata, handles)

% hObject handle to edit4 (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 edit4 as text

% str2double(get(hObject,'String')) returns contents of edit4 as a double

% --- Executes during object creation, after setting all properties.

function edit4_CreateFcn(hObject, eventdata, handles)

% hObject handle to edit4 (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

% --- Executes on selection change in popupmenu2.

function popupmenu2_Callback(hObject, eventdata, handles)

% hObject handle to popupmenu2 (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 popupmenu2 contents as cell array

% contents{get(hObject,'Value')} returns selected item from popupmenu2

% --- Executes during object creation, after setting all properties.

function popupmenu2_CreateFcn(hObject, eventdata, handles)

% hObject handle to popupmenu2 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles empty - handles not created until after all CreateFcns called

% Hint: popupmenu 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

ERROR IS AS FOLLOWS

Unable to read the file. Though iam keeping the file in the same path as my matlab directory path

Thanks

Rizwana

[Walter Roberson]

http://www.mathworks.com/matlabcentral/answers/13205-tutorial-how-to-format-your-question-with-markup

Please show the exact text of the error message including the trace-back to the calls that were active at the time of the error.

Answer 1

[Walter Roberson]

You are carefully extracting the folder name that is appropriate for the file to be in, but then when you go to importdata() you only pass in filename which does not include the folder. You should be using fullfile() to construct the complete path to the file.