Matlab code - can anyone guide me how to sort this kind of error, I am new to MATLAB and trying to create an interface for a audio listening experiment

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andrew titchard
andrew titchard on 13 Jan 2022
Commented: andrew titchard on 14 Jan 2022
>> TEST
Unrecognized function or variable 'pushbutton1_Callback'.
Error in gui_mainfcn (line 95)
feval(varargin{:});
Error in TEST (line 42)
gui_mainfcn(gui_State, varargin{:});
Error in matlab.graphics.internal.figfile.FigFile/read>@(hObject,eventdata)TEST('pushbutton1_Callback',hObject,eventdata,guidata(hObject))
Error while evaluating UIControl Callback.
----
Here is my code
----
function varargout = TEST(varargin)
% TEST MATLAB code for TEST.fig
% TEST, by itself, creates a new TEST or raises the existing
% singleton*.
%
% H = TEST returns the handle to a new TEST or the handle to
% the existing singleton*.
%
% TEST('CALLBACK',hObject,eventData,handles,...) calls the local
% function named CALLBACK in TEST.M with the given input arguments.
%
% TEST('Property','Value',...) creates a new TEST or raises the
% existing singleton*. Starting from the left, property value pairs are
% applied to the GUI before TEST_OpeningFcn gets called. An
% unrecognized property name or invalid value makes property application
% stop. All inputs are passed to TEST_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 TEST
% Last Modified by GUIDE v2.5 17-Dec-2021 14:25:36
% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name', mfilename, ...
'gui_Singleton', gui_Singleton, ...
'gui_OpeningFcn', @TEST_OpeningFcn, ...
'gui_OutputFcn', @TEST_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 TEST is made visible.
function TEST_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 TEST (see VARARGIN)
% Choose default command line output for TEST
handles.output = hObject;
% bg = imread('eeg Data example.png'); imagesc(bg);
% Update handles structure
handles.myWavFiles = {'Cathedral Organ.wav', 'Classic Electric Piano.wav', 'Deep Organ.wav', }; %replace with your wav files
guidata(hObject, handles);
% Update handles structure
guidata(hObject, handles);
% UIWAIT makes TEST wait for user response (see UIRESUME)
% uiwait(handles.figure1);
% --- Outputs from this function are returned to the command line.
function varargout = TEST_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 Play.
function Play_Callback(hObject, eventdata, handles)
% hObject handle to Play (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
if ~isempty(handles.myWavFiles)
handles.wavFileIndex = randi(length(handles.myWavFiles),1,1); % one random file to play
guidata(hObject, handles); % save the index of the file that will be played
wavFileToPlay = handles.myWavFiles{handles.wavFileIndex};
x = audioread(wavFileToPlay);
% NOW PLAY THE AUDIO SAMPLE
sound (x,48000)
end
% --- Executes on slider movement.
function slider1_Callback(hObject, eventdata, handles)
% hObject handle to slider1 (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,'Value') returns position of slider
% get(hObject,'Min') and get(hObject,'Max') to determine range of slider
% --- Executes during object creation, after setting all properties.
function slider1_CreateFcn(hObject, eventdata, handles)
% hObject handle to slider1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
% Hint: slider controls usually have a light gray background.
if isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
set(hObject,'BackgroundColor',[.9 .9 .9]);
end

Accepted Answer

VBBV
VBBV on 14 Jan 2022
function varargout = TEST(varargin)
% TEST MATLAB code for TEST.fig
% TEST, by itself, creates a new TEST or raises the existing
% singleton*.
%
% H = TEST returns the handle to a new TEST or the handle to
% the existing singleton*.
%
% TEST('CALLBACK',hObject,eventData,handles,...) calls the local
% function named CALLBACK in TEST.M with the given input arguments.
%
% TEST('Property','Value',...) creates a new TEST or raises the
% existing singleton*. Starting from the left, property value pairs are
% applied to the GUI before TEST_OpeningFcn gets called. An
% unrecognized property name or invalid value makes property application
% stop. All inputs are passed to TEST_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 TEST
% Last Modified by GUIDE v2.5 17-Dec-2021 14:25:36
% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name', mfilename, ...
'gui_Singleton', gui_Singleton, ...
'gui_OpeningFcn', @TEST_OpeningFcn, ...
'gui_OutputFcn', @TEST_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 TEST is made visible.
function TEST_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 TEST (see VARARGIN)
% Choose default command line output for TEST
handles.output = hObject;
% bg = imread('eeg Data example.png'); imagesc(bg);
% Update handles structure
handles.myWavFiles = {'Cathedral Organ.wav', 'Classic Electric Piano.wav', 'Deep Organ.wav', }; %replace with your wav files
guidata(hObject, handles);
% Update handles structure
guidata(hObject, handles);
% UIWAIT makes TEST wait for user response (see UIRESUME)
% uiwait(handles.figure1);
% --- Outputs from this function are returned to the command line.
function varargout = TEST_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 Play_CreateFcn(hObject, eventdata, handles) % you need to add a CreateFcn and rename it to Play
% hObject handle to slider1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% --- Executes on button press in Play.
function Play_Callback(hObject, eventdata, handles)
% hObject handle to Play (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
if ~isempty(handles.myWavFiles)
handles.wavFileIndex = randi(length(handles.myWavFiles),1,1); % one random file to play
guidata(hObject, handles); % save the index of the file that will be played
wavFileToPlay = handles.myWavFiles{handles.wavFileIndex};
x = audioread(wavFileToPlay);
% NOW PLAY THE AUDIO SAMPLE
sound (x,48000)
end
% --- Executes on slider movement.
function slider1_Callback(hObject, eventdata, handles)
% hObject handle to slider1 (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,'Value') returns position of slider
% get(hObject,'Min') and get(hObject,'Max') to determine range of slider
% --- Executes during object creation, after setting all properties.
function slider1_CreateFcn(hObject, eventdata, handles)
% hObject handle to slider1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
% Hint: slider controls usually have a light gray background.
if isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
set(hObject,'BackgroundColor',[.9 .9 .9]);
end
you need to add a CreateFcn and rename it to Play_CreatFcn instead of just pusbutton1_Callback for the pushbutton. The CreateFcn function for the pushbutton Play is missing
It seems you have added Pushbutton object in your GUI and changed its name tag to Play using the property inspector
So, when you run GUI. it searches for the CreateFcn with same name tag as that of Callback function

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