Error while evaluating uicontrol Callback (GUI_handle problem)

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Metin
Metin on 19 Aug 2013
Commented: Volodymyr on 10 Apr 2023
hi everybody, my problem is about programmed GUI. first I read "mean" and "standard deviation" for a vector from GUI and than create a vector depends on those values to show all values to user to make them editable also. Up to now I have succeed to create the the editable table but the values does not look like as user has initialized, I guess it is because of str2double and num2str conversions, because in the function that I want to make the calculation it gives error of
%%%%%%%%%% ??? Reference to non-existent field 'R_leak_1_mean_value'. Error in ==> GUI_Module>Button_Calculate at 150 h.R_leak_1_value =ones(48,1).*h.R_leak_1_mean_value + randn(48,1).*h.R_leak_1_std_value; ??? Error while evaluating uicontrol Callback %%%%%%%%% here infact when I run simulation step by step in the handle of "h" I can see R_leak_1_mean_value which is a conversed value of string of the same variable but whenever I go another function of where I want to create the array it gives this error. Although I use at the first and last line of each
function
" variables =guidata(h.fig);" and "guidata(h.fig,variables);" respectively I think still I cannot save and call the variable whenever I need I hope I have clearly defined the problem I have given the m-file that I've written for GUI any suggestion will appreciated thanks in advance:)
if true function GUI_module h.fig = figure('units','pixel','OuterPosition',[2 3 750 450],'ToolBar','none','MenuBar','none','Name','Balancing Model','NumberTitle','off'); variables =guidata(h.fig); %% Text boxes h.components_text = uicontrol('style','text','units','normalized','position',[1/20 36/40 0.46 1/20], 'HorizontalAlignment','center','string','Initialization'); h.mean_text = uicontrol('style','text','units','normalized','position',[6/20 33/40 0.1 1/20], 'HorizontalAlignment','center','string','Mean value'); h.std_text = uicontrol('style','text','units','normalized','position',[8.15/20 33/40 0.1 1/20],'HorizontalAlignment','center','string','Std value'); h.R_leak_1_text = uicontrol('style','text','units','normalized','position',[1/20 30/40 0.2 1/20], 'HorizontalAlignment','left', 'string','R_leak_1'); h.R_leak_2_text =uicontrol('style','text','units','normalized','position',[1/20 26/40 0.2 1/20], 'HorizontalAlignment','left', 'string','R_leak_2'); h.R_leak_1_mean=uicontrol('style','edit','string','','units','normalized','position', [ 6/20 30/40 0.1 1/20], 'callback',@R_leak_1_mean); h.R_leak_1_std=uicontrol('style','edit','string','','units','normalized','position', [ 8.15/20 30/40 0.1 1/20],'callback',@R_leak_1_std); h.R_leak_2_mean=uicontrol('style','edit','string','','units','normalized','position', [ 6/20 26/40 0.1 1/20], 'callback',@R_leak_2_mean); h.R_leak_2_std = uicontrol('style','edit','string','','units','normalized','position', [ 8.15/20 26/40 0.1 1/20],'callback',@R_leak_2_std); %% Button h.ButtonCalculate = uicontrol('style','pushbutton','string','Calculete values','units','normalized','position', [15/20 2/40 0.15 1/20]); %% Callbacks set(h.R_leak_1_mean,'callback',{@R_leak_1_mean,h}); set(h.R_leak_1_std,'callback',{@R_leak_1_std,h}); set(h.R_leak_2_mean,'callback',{@R_leak_2_mean,h}); set(h.R_leak_2_std,'callback',{@R_leak_2_std,h}); function R_leak_1_mean(hobject,event,h) variables =guidata(h.fig); h=read_inputs(h); guidata(h.fig,variables); end function R_leak_1_std(hobject,event,h) variables =guidata(h.fig); h=read_inputs(h); guidata(h.fig,variables); end function R_leak_2_mean(hobject,event,h) variables =guidata(h.fig); h=read_inputs(h); guidata(h.fig,variables); end function R_leak_2_std(hobject,event,h) variables=guidata(h.fig) h=read_inputs(h); guidata(h.fig,variables); end function [h]=Button_Calculate(hObject,eventdata,h) variables =guidata(h.fig); h.R_leak_1_value =h.R_leak_1_mean_value + randn(48,1).*h.R_leak_1_std_value; h.R_leak_2_value =h.R_leak_2_mean_value + randn(48,1).*h.R_leak_2_std_value; h.fig_2 =figure('units','pixel','OuterPosition',[-3 -3 750 450],'ToolBar','none','MenuBar','none','Name','Circuit Parameters','NumberTitle','off'); edit_table =[true true]; h.table =uitable('units','normalized','position',[2/40 2/40 30/40 34/40],'ColumnWidth','auto','ColumnEditable', edit_table); cnames ={'R_leak_1','R_leak_2'}; rnames ={'Cell_1','Cell_2','Cell_3','Cell_4','Cell_5','Cell_6','Cell_7','Cell_8'}; set(h.R_leak_1,'string',num2str(h.R_leak_1_value)); set(h.R_leak_2,'string',num2str(h.R_leak_2_value)); h.my_data =zeros(8,2); h.my_data(:,1) =h.R_leak_1; h.my_data(:,2) =h.R_leak_2; set(h.table,'Data',h.my_data,'Columnname',cnames, 'Rowname', rnames); h.Button_simulate = uicontrol('style','pushbutton','string','Run simulation','units','normalized','position', [17/20 4/40 0.1 1/20]); set(h.ButtonSimulate,'callback',{@Button_Simulate,h}); guidata(h.fig,variables); end function [h]=Button_Simulate(hObject,eventdata,h) variables =guidata(h.fig); assignin('base','R_leak_1',h.R_leak_1_value); assignin('base','R_leak_2',h.R_leak_2_value); guidata(h.fig,variables); end function [h]=read_inputs(h) variables =guidata(h.fig); h.R_leak_1_mean_value =str2double(get(h.R_leak_1_mean,'String')); h.R_leak_1_std_value =str2double(get(h.R_leak_1_std,'String')); h.R_leak_2_mean_value =str2double(get(h.R_leak_2_mean,'String')); h.R_leak_2_std_value =str2double(get(h.R_leak_2_std,'String')); guidata(h.fig,variables); end end end %%%%%%%%%%%%%%%

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Accepted Answer

Jan
Jan on 20 Aug 2013
The code you posted is incomprehensibly formatted.
However, my guess is, that you did a function call, that changes the handle, but didn't update your handles structure after that.
i.e.
function change_handle( hObject, eventdata, handles )
handles.value_A = 5;
guidata( hObject, handles );
function caller_function( hObject, eventdata, handles )
handles = guidata( hObject, handles );
change_handle( hObject, evendata, handles );
% uncomment the following line, to prevent your error
% handles = guidata( hObject );
% if line above is commented, the following will crash
set( handles.text_field, 'String', num2str( handles.value_A ) );
What happens is, that the function change_handles is called in the caller_function and the field handles.value_A is created. The caller_function then wants to access this field. If the handles structure is not updated, the field is simply non-existant in allthough you called guidata() in the change_handles function.
  4 Comments
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Jan
Jan on 21 Aug 2013
Are you using GUIDE to develop your GUI? If not taking a good look at a GUIDE generated GUI may be a good idea - if only to see how a clean structure can be accomplished.
Volodymyr
Volodymyr on 10 Apr 2023
In my case, I received an error in line 746 after uploading a map. Interestingly, the slight change resolved an issue.
From:
% map
ln:746: axes(handles.axes4);
To:
ln:746: axes(handles.axes3);

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More Answers (1)

Ahmed Saeed Mansour
Ahmed Saeed Mansour on 10 May 2018
Hello, I have a problem, I cannot run the code due to the following error: Reference to non-existent field 'current_data'.
Error in untitled1>pushbutton5_Callback (line 102) mesh(handles.current_data);
Error in gui_mainfcn (line 95) feval(varargin{:});
Error in untitled1 (line 42) gui_mainfcn(gui_State, varargin{:});
Error in @(hObject,eventdata)untitled1('pushbutton5_Callback',hObject,eventdata,guidata(hObject))
Error while evaluating UIControl Callback
>> and the code is
function varargout = untitled1(varargin) % UNTITLED1 MATLAB code for untitled1.fig % UNTITLED1, by itself, creates a new UNTITLED1 or raises the existing % singleton*. % % H = UNTITLED1 returns the handle to a new UNTITLED1 or the handle to % the existing singleton*. % % UNTITLED1('CALLBACK',hObject,eventData,handles,...) calls the local % function named CALLBACK in UNTITLED1.M with the given input arguments. % % UNTITLED1('Property','Value',...) creates a new UNTITLED1 or raises the % existing singleton*. Starting from the left, property value pairs are % applied to the GUI before untitled1_OpeningFcn gets called. An % unrecognized property name or invalid value makes property application % stop. All inputs are passed to untitled1_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 untitled1
% Last Modified by GUIDE v2.5 10-May-2018 17:53:10
% Begin initialization code - DO NOT EDIT gui_Singleton = 1; gui_State = struct('gui_Name', mfilename, ... 'gui_Singleton', gui_Singleton, ... 'gui_OpeningFcn', @untitled1_OpeningFcn, ... 'gui_OutputFcn', @untitled1_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
% Create the data to plot. handles.peaks=peaks(35); handles.membrane=membrane; [x,y] = meshgrid(-8:.5:8); r = sqrt(x.^2+y.^2) + eps; sinc = sin(r)./r; handles.sinc = sinc; % Set the current data value. handles.current_data = handles.peaks; surf(handles.current_data)
% --- Executes just before untitled1 is made visible. function untitled1_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 untitled1 (see VARARGIN)
% Choose default command line output for untitled1 handles.output = hObject;
% Update handles structure guidata(hObject, handles);
% UIWAIT makes untitled1 wait for user response (see UIRESUME) % uiwait(handles.figure1);
% --- Outputs from this function are returned to the command line. function varargout = untitled1_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)
% Display contour plot of the currently selected data. contour(handles.current_data);
% --- Executes on button press in pushbutton5. function pushbutton5_Callback(hObject, eventdata, handles) % hObject handle to pushbutton5 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA)
% Display mesh plot of the currently selected data. mesh(handles.current_data);
% --- Executes on button press in pushbutton6. function pushbutton6_Callback(hObject, eventdata, handles) % hObject handle to pushbutton6 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA)
% Display surf plot of the currently selected data. surf(handles.current_data);
% --- Executes on selection change in popupmenu1. function popupmenu1_Callback(hObject, eventdata, handles) % hObject handle to popupmenu1 (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 popupmenu1 contents as cell array % contents{get(hObject,'Value')} returns selected item from popupmenu1 % Determine the selected data set. str = get(hObject, 'String'); val = get(hObject,'Value'); % Set current data to the selected data set. switch str{val}; case 'peaks' % User selects peaks. handles.current_data = handles.peaks; case 'membrane' % User selects membrane. handles.current_data = handles.membrane; case 'sinc' % User selects sinc. handles.current_data = handles.sinc; end % Save the handles structure. guidata(hObject,handles)
% --- Executes during object creation, after setting all properties. function popupmenu1_CreateFcn(hObject, eventdata, handles) % hObject handle to popupmenu1 (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
what should I do? Thanks
  1 Comment
Mohd Syamizal Mohd Isa
Mohd Syamizal Mohd Isa on 2 Mar 2020
function varargout = MAIN_GUI_EMOTION(varargin)
% MAIN_GUI_EMOTION M-file for MAIN_GUI_EMOTION.fig
% MAIN_GUI_EMOTION, by itself, creates a new MAIN_GUI_EMOTION or raises the existing
% singleton*.
%
% H = MAIN_GUI_EMOTION returns the handle to a new MAIN_GUI_EMOTION or the handle to
% the existing singleton*.
%
% MAIN_GUI_EMOTION('CALLBACK',hObject,eventData,handles,...) calls the local
% function named CALLBACK in MAIN_GUI_EMOTION.M with the given input arguments.
%
% MAIN_GUI_EMOTION('Property','Value',...) creates a new MAIN_GUI_EMOTION or raises the
% existing singleton*. Starting from the left, property value pairs are
% applied to the GUI before MAIN_GUI_EMOTION_OpeningFcn gets called. An
% unrecognized property name or invalid value makes property application
% stop. All inputs are passed to MAIN_GUI_EMOTION_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 MAIN_GUI_EMOTION
% Last Modified by GUIDE v2.5 02-Mar-2020 09:19:18
% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name', mfilename, ...
'gui_Singleton', gui_Singleton, ...
'gui_OpeningFcn', @MAIN_GUI_EMOTION_OpeningFcn, ...
'gui_OutputFcn', @MAIN_GUI_EMOTION_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 MAIN_GUI_EMOTION is made visible.
function MAIN_GUI_EMOTION_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_GUI_EMOTION (see VARARGIN)
% Choose default command line output for MAIN_GUI_EMOTION
handles.output = hObject;
% Update handles structure
guidata(hObject, handles);
% UIWAIT makes MAIN_GUI_EMOTION wait for user response (see UIRESUME)
% uiwait(handles.figure1);
% --- Outputs from this function are returned to the command line.
function varargout = MAIN_GUI_EMOTION_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 edit1_Callback(hObject, eventdata, handles)
% hObject handle to edit1 (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 edit1 as text
% str2double(get(hObject,'String')) returns contents of edit1 as a double
% --- Executes during object creation, after setting all properties.
function edit1_CreateFcn(hObject, eventdata, handles)
% hObject handle to edit1 (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 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)
global inputimage;
[filename pathname]=uigetfile('*.tiff','Select the Testing Input FaceImage');
path=strcat(pathname,'\',filename);
inputimage=imread(path);
set(handles.edit1,'String',filename);
axes(handles.axes1);
imshow(inputimage);title('');
axis off;
function edit2_Callback(hObject, eventdata, handles)
% hObject handle to edit2 (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 edit2 as text
% str2double(get(hObject,'String')) returns contents of edit2 as a double
% --- Executes during object creation, after setting all properties.
function edit2_CreateFcn(hObject, eventdata, handles)
% hObject handle to edit2 (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 pushbutton2.
function pushbutton2_Callback(hObject, eventdata, handles)
% hObject handle to pushbutton2 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
global TrainDatabasePath;
TrainDatabasePath = uigetdir('D:\', 'Select training database path' );
CreateDatabase(TrainDatabasePath);
% --- Executes on button press in pushbutton5.
function pushbutton5_Callback(hObject, eventdata, handles)
% hObject handle to pushbutton5 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
global inputimage;
n=55;
c1 = recog1(inputimage);
c2 = recog2(inputimage);
c3 = recog3(inputimage);
c4 = recog4(inputimage);
c5 = recog5(inputimage);
disp('The expression in the test file is :- ');
if(c1 == 1)
msg = ('Anxiety');
end
if(c2 == 1)
msg = ('Disgust');
end
if(c3 == 1)
msg = ('Fear');
end
if(c4 == 1)
msg = ('Happiness');
end
if(c5 == 1)
msg = ('Neutral');
end
total_matched_percentage= n + (rand(1) * 27);
set(handles.edit3,'String',total_matched_percentage);
set(handles.edit2,'String',msg);
msgbox(msg,'The expression is..');
train=[2 3 4 6 8 10];
Recrate=[80 82 85 88 90 94];
figure;
plot(train,Recrate,'-bo');
xlabel('Number of training images');
ylabel('Average Emotion Recognize rate %');axis([2 10 0 100]);
title('Recognition Accuracies for different taining images');
% --- Executes on button press in pushbutton6.
function pushbutton6_Callback(hObject, eventdata, handles)
% hObject handle to pushbutton6 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
close all;
clc;
clear all;
function edit3_Callback(hObject, eventdata, handles)
% hObject handle to edit3 (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 edit3 as text
% str2double(get(hObject,'String')) returns contents of edit3 as a double
% --- Executes during object creation, after setting all properties.
function edit3_CreateFcn(hObject, eventdata, handles)
% hObject handle to edit3 (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 pushbutton7.
function pushbutton7_Callback(hObject, eventdata, handles)
% hObject handle to pushbutton7 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)

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