Why is my GUI program producing an error when I 'Run' it?

Question

Error:
Error in mcr_main>but_SVD_Callback (line 274)
svdgui;

Error in gui_mainfcn (line 95)
        feval(varargin{:});

Error in mcr_main (line 42)
    gui_mainfcn(gui_State, varargin{:});

Error in
matlab.graphics.internal.figfile.FigFile/read>@(hObject,eventdata)mcr_main('but_SVD_Callback',hObject,eventdata,guidata(hObject))
 
Error while evaluating UIControl Callback.

Here is the code:
function varargout = mcr_main(varargin)
% MCR_MAIN M-file for mcr_main.fig
%      MCR_MAIN, by itself, creates a new MCR_MAIN or raises the existing
%      singleton*.
%
%      H = MCR_MAIN returns the handle to a new MCR_MAIN or the handle to
%      the existing singleton*.
%
%      MCR_MAIN('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in MCR_MAIN.M with the given input arguments.
%
%      MCR_MAIN('Property','Value',...) creates a new MCR_MAIN or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before mcr_main_OpeningFunction gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to mcr_main_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 mcr_main

% Last Modified by GUIDE v2.5 10-Apr-2015 14:44:19

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
    'gui_Singleton',  gui_Singleton, ...
    'gui_OpeningFcn', @mcr_main_OpeningFcn, ...
    'gui_OutputFcn',  @mcr_main_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 mcr_main is made visible.
function mcr_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 mcr_main (see VARARGIN)

% Choose default command line output for mcr_main
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes mcr_main wait for user response (see UIRESUME)
% uiwait(handles.figure1);

% --- Outputs from this function are returned to the command line.
clc;
disp ('   ')
disp ('   ')
disp ('   ************************************************************************************')
disp ('   *                           MATLAB program MCR-ALS:                                *')
disp ('   *                           Multivariate Curve Resolution (MCR)                    *')
disp ('   *                           Alternating Least Squares (ALS)                        *')
disp ('   ************************************************************************************')
disp ('   ')
disp ('                                                                 MCR 2.0     version   ')
disp ('   ')
disp ('   ')

% initializations
if ((evalin('base','exist(''mcr_als'')'))==1);evalin('base','clear(''mcr_als'')');end;
evalin('base','mcr_als.alsOptions.weighted.constrained=0;');

function varargout = mcr_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;

% Data set
% *************************************************************************

% List of the variables of the WS
% *************************************************************************


% --- Executes on button press in check_dataType.
function check_dataType_Callback(hObject, eventdata, handles)
% hObject    handle to check_dataType (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of check_dataType

valorDT=get(hObject,'Value');

if valorDT==0
    lsvar=evalin('base','whos');
    [aa,bb]=size(lsvar);
    j=2;
    lsv(1)={'select a variable from the WS'};
    for i=1:aa,
        csize=length(lsvar(i).class);
        if csize==6,
            if lsvar(i).class=='double',
                lsb=[lsvar(i).name];
                lsv(j)={lsb};
                j=j+1;
            end;
        end;
    end;
    
    set(handles.popupmenu3,'string',lsv)
    
else
    lsvar=evalin('base','whos');
    [aa,bb]=size(lsvar);
    j=2;
    lsv(1)={'select a variable from the WS'};
    for i=1:aa,
        csize=length(lsvar(i).class);
        if csize==6,
            if (lsvar(i).class==('double')|lsvar(i).class==('single')|lsvar(i).class==('int8  ')|lsvar(i).class==('int16 ')|lsvar(i).class==('int32 ')|lsvar(i).class==('int64 ')|lsvar(i).class==('uint8 ')|lsvar(i).class==('uint16')|lsvar(i).class==('uint32')|lsvar(i).class==('uint64'));
                lsb=[lsvar(i).name];
                lsv(j)={lsb};
                j=j+1;
            end;
        end;
    end;
    
    set(handles.popupmenu3,'string',lsv)
    
end



% --- Executes during object creation, after setting all properties.
function popupmenu3_CreateFcn(hObject, eventdata, handles)
% hObject    handle to popupmenu3 (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

lsvar=evalin('base','whos');
[aa,bb]=size(lsvar);
j=2;
lsv(1)={'select a variable from the WS'};
for i=1:aa,
    csize=length(lsvar(i).class);
    if csize==6,
        if lsvar(i).class=='double',
            lsb=[lsvar(i).name];
            lsv(j)={lsb};
            j=j+1;
        end;
    end;
end;

set(hObject,'string',lsv)

% --- Executes on selection change in popupmenu3.
function popupmenu3_Callback(hObject, eventdata, handles)
% hObject    handle to popupmenu3 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: contents = get(hObject,'String') returns popupmenu3 contents as cell array
%        contents{get(hObject,'Value')} returns selected item from popupmenu3

popmenu3=get(handles.popupmenu3,'String');
pm3=get(handles.popupmenu3,'Value');

if pm3==1
    
else
    selec3=char([popmenu3(pm3)]);
    matdad=evalin('base',selec3);
    assignin('base','matdad',matdad);
    assignin('base','selec3',selec3);
    evalin('base','mcr_als.OriginalData=matdad;');
    evalin('base','mcr_als.data=matdad;');
    evalin('base','mcr_als.aux.data_name=selec3;');
    set(handles.text_nom,'string',selec3);
    evalin('base','clear matdad selec3'); 
    
    % activate: number of components
    set(handles.push_dades,'enable','on');
    set(handles.but_SVD,'enable','on');
    set(handles.but_manComp,'enable','on');
    evalin('base','mcr_als.aux.estat=0;');
    
    % activate: weight text
    set(handles.text_weight,'string','No');    
end


% Plot the selected data
% *************************************************************************

% --- Executes on button press in push_dades.
function push_dades_Callback(hObject, eventdata, handles)
% hObject    handle to push_dades (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% 
% 
% figure;
% matriu=evalin('base','mcr_als.data');
% plot(matriu');

plot_dades;


% N components
% *************************************************************************

% --- Executes on button press in but_SVD.
function but_SVD_Callback(hObject, eventdata, handles)
% hObject    handle to but_SVD (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of but_SVD

set(handles.push_dades,'enable','off');
set(handles.check_weight,'enable','off');
set(handles.push_weight,'enable','off');
set(handles.but_SVD,'enable','off');
set(handles.but_manComp,'enable','off');
set(handles.but_Pure,'enable','off');
set(handles.but_EFA,'enable','off');
set(handles.but_ManEst,'enable','off');
set(handles.but_ALS,'enable','off');
set(handles.but_quit,'enable','off');
evalin('base','mcr_als.aux.estat=1;');

matriu_svd=evalin('base','mcr_als.data');
[a,b]=size(matriu_svd);
evalin('base','mcr_als.aux.estat_svd=1;');

if (a>10000 | b>10000) % avoid problems with big data
    svd_selection;
    while evalin('base','mcr_als.aux.estat_svd;')==1
        pause(0.3);
    end
    nrsvd=evalin('base','mcr_als.aux.nrsvd;');
    [U,S,V]=svds(matriu_svd,nrsvd);
else
    [U,S,V]=svd(matriu_svd,'econ');
end

assignin('base','U',U);
assignin('base','S',S);
assignin('base','V',V);
evalin('base','mcr_als.CompNumb.U=U;');
evalin('base','mcr_als.CompNumb.S=S;');
evalin('base','mcr_als.CompNumb.V=V;');
evalin('base','clear U S V');
svdgui;

while(evalin('base','mcr_als.aux.estat')==1)
    pause(0.3);
end

if (evalin('base','mcr_als.aux.estat')==2)
    set(handles.push_dades,'enable','off');
    set(handles.check_weight,'enable','on');
    set(handles.push_weight,'enable','off');
    set(handles.but_SVD,'enable','on');
    set(handles.but_manComp,'enable','on');
    set(handles.but_Pure,'enable','on');
    set(handles.but_EFA,'enable','on');
    set(handles.but_ManEst,'enable','on');
    set(handles.but_ALS,'enable','off');
    set(handles.but_quit,'enable','on');
    set(handles.text_nc,'string',num2str(evalin('base','mcr_als.CompNumb.nc')));
    set(handles.text_ncmet,'string',evalin('base','mcr_als.CompNumb.method'));
    
elseif (evalin('base','mcr_als.aux.estat')==3)
    set(handles.push_dades,'enable','off');
    set(handles.check_weight,'enable','off');
    set(handles.push_weight,'enable','off');
    set(handles.but_SVD,'enable','on');
    set(handles.but_manComp,'enable','on');
    set(handles.but_Pure,'enable','off');
    set(handles.but_EFA,'enable','off');
    set(handles.but_ManEst,'enable','off');
    set(handles.but_ALS,'enable','off');
    set(handles.but_quit,'enable','on');
end

evalin('base','mcr_als.aux.estat=0;');

% --- Executes on button press in but_manComp.
function but_manComp_Callback(hObject, eventdata, handles)
% hObject    handle to but_manComp (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of but_manComp

set(handles.push_dades,'enable','off');
set(handles.check_weight,'enable','on');
set(handles.push_weight,'enable','off');
set(handles.but_SVD,'enable','off');
set(handles.but_manComp,'enable','off');
set(handles.but_Pure,'enable','off');
set(handles.but_EFA,'enable','off');
set(handles.but_ManEst,'enable','off');
set(handles.but_ALS,'enable','off');
set(handles.but_quit,'enable','off');
evalin('base','mcr_als.aux.estat=1;');
manComp;

while(evalin('base','mcr_als.aux.estat')==1)
    pause(0.3);
end

if (evalin('base','mcr_als.aux.estat')==2)
    set(handles.push_dades,'enable','off');
    set(handles.check_weight,'enable','on');
    set(handles.push_weight,'enable','off');
    set(handles.but_SVD,'enable','on');
    set(handles.but_manComp,'enable','on');
    set(handles.but_Pure,'enable','on');
    set(handles.but_EFA,'enable','on');
    set(handles.but_ManEst,'enable','on');
    set(handles.but_ALS,'enable','off');
    set(handles.but_quit,'enable','on');
    set(handles.text_nc,'string',num2str(evalin('base','mcr_als.CompNumb.nc')));
    set(handles.text_ncmet,'string',evalin('base','mcr_als.CompNumb.method'));
elseif (evalin('base','mcr_als.aux.estat')==3)
    set(handles.push_dades,'enable','off');
    set(handles.check_weight,'enable','on');
    set(handles.push_weight,'enable','off');
    set(handles.but_SVD,'enable','on');
    set(handles.but_manComp,'enable','on');
    set(handles.but_Pure,'enable','off');
    set(handles.but_EFA,'enable','off');
    set(handles.but_ManEst,'enable','off');
    set(handles.but_ALS,'enable','off');
    set(handles.but_quit,'enable','on');
end

evalin('base','mcr_als.aux.estat=0;');


% Weighting
% *************************************************************************

% --- Executes on button press in check_weight.
function check_weight_Callback(hObject, eventdata, handles)
% hObject    handle to check_weight (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of check_weight

valorW=get(hObject,'Value');

if valorW==0
    set(handles.push_weight,'enable','off');
    set(handles.text_weight,'string','No');
    set(handles.text_ready,'string','-','ForegroundColor','Black');
    set(handles.but_Pure,'enable','on');
    set(handles.but_EFA,'enable','on');
    set(handles.but_ManEst,'enable','on');
    
    evalin('base','mcr_als.data=mcr_als.OriginalData;'); % reset original data without weighting
    selec3=evalin('base','mcr_als.aux.data_name;');
    set(handles.text_nom,'string',selec3);
else
    set(handles.push_weight,'enable','on');
    set(handles.text_weight,'string','Yes');
    set(handles.text_ready,'string','Not Ready','ForegroundColor','Red');
    set(handles.but_Pure,'enable','off');
    set(handles.but_EFA,'enable','off');
    set(handles.but_ManEst,'enable','off');
end

evalin('base','mcr_als.alsOptions.weighted.appWeight=0;');
assignin('base','valorW',valorW);
evalin('base','mcr_als.alsOptions.weighted.check_application=valorW;');
evalin('base','clear valorW');


% --- Executes on button press in push_weight.
function push_weight_Callback(hObject, eventdata, handles)
% hObject    handle to push_weight (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

set(handles.push_dades,'enable','inactive');
set(handles.push_weight,'enable','off');
set(handles.but_SVD,'enable','off');
set(handles.but_manComp,'enable','off');
set(handles.but_Pure,'enable','off');
set(handles.but_EFA,'enable','off');
set(handles.but_ManEst,'enable','off');
set(handles.but_ALS,'enable','off');
set(handles.but_quit,'enable','off');

evalin('base','mcr_als.aux.estat=1;');

appWeight=evalin('base','mcr_als.alsOptions.weighted.appWeight;');
if appWeight==0
    evalin('base','mcr_als.alsOptions.weighted.application=0;');
    evalin('base','mcr_als.alsOptions.weighted.max_iterations=200000;');
    evalin('base','mcr_als.alsOptions.weighted.conv_limit=1e-10;');
    evalin('base','mcr_als.alsOptions.weighted.constrained=0;');
    weighted;
else
    weighted;
end

while(evalin('base','mcr_als.aux.estat')==1)
    pause(0.3);
end

if (evalin('base','mcr_als.aux.estat')==2)
    set(handles.push_dades,'enable','off');
    set(handles.push_weight,'enable','on');
    set(handles.but_SVD,'enable','on');
    set(handles.but_manComp,'enable','on');
    set(handles.but_Pure,'enable','on');
    set(handles.but_EFA,'enable','on');
    set(handles.but_ManEst,'enable','on');
    set(handles.but_ALS,'enable','off');
    set(handles.but_quit,'enable','on');
    if evalin('base','mcr_als.alsOptions.weighted.constrained;')==1;
        set(handles.text_ready,'string','Using & OK','ForegroundColor','Green');
        evalin('base','mcr_als.data=mcr_als.alsOptions.weighted.Xmat_weighted;'); % reset original data without weighting
        selec3=evalin('base','mcr_als.aux.data_name;');
        set(handles.text_nom,'string',[selec3,' - weighted']);
        
    else
        set(handles.text_ready,'string','Done, not OK','ForegroundColor','Blue');
        selec3=evalin('base','mcr_als.aux.data_name;');
        set(handles.text_nom,'string',selec3);
    end
elseif (evalin('base','mcr_als.aux.estat')==3)
    set(handles.push_dades,'enable','off');
    set(handles.but_SVD,'enable','on');
    set(handles.but_manComp,'enable','on');
    set(handles.but_Pure,'enable','on');
    set(handles.but_EFA,'enable','on');
    set(handles.but_ManEst,'enable','on');
    set(handles.but_ALS,'enable','off');
    set(handles.but_quit,'enable','on');
    set(handles.text_ready,'string','Cancelled','ForegroundColor','Black');
end

evalin('base','mcr_als.aux.estat=0;');


% Initial estimations
% *************************************************************************

% --- Executes on button press in but_Pure.
function but_Pure_Callback(hObject, eventdata, handles)
% hObject    handle to but_Pure (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of but_Pure

set(handles.push_dades,'enable','off');
set(handles.push_weight,'enable','off');
set(handles.but_SVD,'enable','off');
set(handles.but_manComp,'enable','off');
set(handles.but_Pure,'enable','off');
set(handles.but_EFA,'enable','off');
set(handles.but_ManEst,'enable','off');
set(handles.but_ALS,'enable','off');
set(handles.but_quit,'enable','off');

evalin('base','mcr_als.aux.estat=1;');

puregui;

while(evalin('base','mcr_als.aux.estat')==1)
    pause(0.3);
end

if (evalin('base','mcr_als.aux.estat')==2)
    set(handles.push_dades,'enable','off');
    set(handles.push_weight,'enable','off');
    set(handles.but_SVD,'enable','on');
    set(handles.but_manComp,'enable','on');
    set(handles.but_Pure,'enable','on');
    set(handles.but_EFA,'enable','on');
    set(handles.but_ManEst,'enable','on');
    set(handles.but_ALS,'enable','on');
    set(handles.but_quit,'enable','on');
    set(handles.text_iniesta,'string',evalin('base','mcr_als.InitEstim.method'));
elseif (evalin('base','mcr_als.aux.estat')==3)
    set(handles.push_dades,'enable','off');
    set(handles.push_weight,'enable','off');
    set(handles.but_SVD,'enable','on');
    set(handles.but_manComp,'enable','on');
    set(handles.but_Pure,'enable','on');
    set(handles.but_EFA,'enable','on');
    set(handles.but_ManEst,'enable','on');
    set(handles.but_ALS,'enable','off');
    set(handles.but_quit,'enable','on');
end

evalin('base','mcr_als.aux.estat=0;');

% --- Executes on button press in but_EFA.
function but_EFA_Callback(hObject, eventdata, handles)
% hObject    handle to but_EFA (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of but_EFA

set(handles.push_dades,'enable','off');
set(handles.push_weight,'enable','off');
set(handles.but_SVD,'enable','off');
set(handles.but_manComp,'enable','off');
set(handles.but_Pure,'enable','off');
set(handles.but_EFA,'enable','off');
set(handles.but_ManEst,'enable','off');
set(handles.but_ALS,'enable','off');
set(handles.but_quit,'enable','off');

evalin('base','mcr_als.aux.estat=1;');
evalin('base','mcr_als.aux.counter=0;');
efagui;

while(evalin('base','mcr_als.aux.estat')==1)
    pause(0.3);
end

if (evalin('base','mcr_als.aux.estat')==2)
    set(handles.push_dades,'enable','off');
    set(handles.push_weight,'enable','off');
    set(handles.but_SVD,'enable','on');
    set(handles.but_manComp,'enable','on');
    set(handles.but_Pure,'enable','on');
    set(handles.but_EFA,'enable','on');
    set(handles.but_ManEst,'enable','on');
    set(handles.but_ALS,'enable','on');
    set(handles.but_quit,'enable','on');
    set(handles.text_iniesta,'string',evalin('base','mcr_als.InitEstim.method'));
elseif (evalin('base','mcr_als.aux.estat')==3)
    set(handles.push_dades,'enable','off');
    set(handles.push_weight,'enable','off');
    set(handles.but_SVD,'enable','on');
    set(handles.but_manComp,'enable','on');
    set(handles.but_Pure,'enable','on');
    set(handles.but_EFA,'enable','on');
    set(handles.but_ManEst,'enable','on');
    set(handles.but_ALS,'enable','off');
    set(handles.but_quit,'enable','on');
end

evalin('base','mcr_als.aux.estat=0;');


% --- Executes on button press in but_ManEst.
function but_ManEst_Callback(hObject, eventdata, handles)
% hObject    handle to but_ManEst (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of but_ManEst

set(handles.push_dades,'enable','off');
set(handles.push_weight,'enable','off');
set(handles.but_SVD,'enable','off');
set(handles.but_manComp,'enable','off');
set(handles.but_Pure,'enable','off');
set(handles.but_EFA,'enable','off');
set(handles.but_ManEst,'enable','off');
set(handles.but_ALS,'enable','off');
set(handles.but_quit,'enable','off');

evalin('base','mcr_als.aux.estat=1;');

manEst;

while(evalin('base','mcr_als.aux.estat')==1)
    pause(0.3);
end

if (evalin('base','mcr_als.aux.estat')==2)
    
    set(handles.push_dades,'enable','off');
    set(handles.push_weight,'enable','off');
    set(handles.but_SVD,'enable','on');
    set(handles.but_manComp,'enable','on');
    set(handles.but_Pure,'enable','on');
    set(handles.but_EFA,'enable','on');
    set(handles.but_ManEst,'enable','on');
    set(handles.but_ALS,'enable','on');
    set(handles.but_quit,'enable','on');
    set(handles.text_iniesta,'string',evalin('base','mcr_als.InitEstim.method'));
elseif (evalin('base','mcr_als.aux.estat')==3)
    
    set(handles.push_dades,'enable','off');
    set(handles.push_weight,'enable','off');
    set(handles.but_SVD,'enable','on');
    set(handles.but_manComp,'enable','on');
    set(handles.but_Pure,'enable','on');
    set(handles.but_EFA,'enable','on');
    set(handles.but_ManEst,'enable','on');
    set(handles.but_ALS,'enable','off');
    set(handles.but_quit,'enable','on');
end

evalin('base','mcr_als.aux.estat=0;');


% Go to ALS
% *************************************************************************

% --- Executes on button press in but_ALS.
function but_ALS_Callback(hObject, eventdata, handles)
% hObject    handle to but_ALS (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of but_ALS
close;

% evalin('base','initEstim=mcr_als.InitEstim.iniesta;');
als2013;


% Quit
% *************************************************************************

% --- Executes on button press in but_quit.
function but_quit_Callback(hObject, eventdata, handles)
% hObject    handle to but_quit (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of but_quit

if ((evalin('base','exist(''mcr_als'')'))==1);evalin('base','clear(''mcr_als'')');end;
close;



% --- Executes on button press in push_alsInfo.
function push_alsInfo_Callback(hObject, eventdata, handles)
% hObject    handle to push_alsInfo (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

als_info;

Walter Roberson · Accepted Answer

svdgui appears to be part of the third-party MCR-ALS Toolbox from https://mcrals.wordpress.com/download/mcr-als-2-0-toolbox/ 
You need to have downloaded the toolbox, and you need to either be executing inside the directory that has svdgui or else you need to have added the directory with that code to your MATLAB path, such as by using pathtool

Why is my GUI program producing an error when I 'Run' it?

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Why is my GUI program producing an error when I 'Run' it?

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