user interface - save GUI figure in matlab

Question

let us consider following program for graphical user interface

function varargout = quadratic(varargin)
% QUADRATIC MATLAB code for quadratic.fig
%      QUADRATIC, by itself, creates a new QUADRATIC or raises the existing
%      singleton*.
%
%      H = QUADRATIC returns the handle to a new QUADRATIC or the handle to
%      the existing singleton*.
%
%      QUADRATIC('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in QUADRATIC.M with the given input arguments.
%
%      QUADRATIC('Property','Value',...) creates a new QUADRATIC or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before quadratic_OpeningFcn gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to quadratic_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 quadratic

% Last Modified by GUIDE v2.5 23-Jul-2014 18:00:48

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @quadratic_OpeningFcn, ...
                   'gui_OutputFcn',  @quadratic_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 quadratic is made visible.
function quadratic_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 quadratic (see VARARGIN)

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

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes quadratic wait for user response (see UIRESUME)
% uiwait(handles.figure1);


% --- Outputs from this function are returned to the command line.
function varargout = quadratic_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 edit1.
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)


% --- 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



function b_Callback(hObject, eventdata, handles)
% hObject    handle to b (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 b as text
%        str2double(get(hObject,'String')) returns contents of b as a double


% --- Executes during object creation, after setting all properties.
function b_CreateFcn(hObject, eventdata, handles)
% hObject    handle to b (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 c_Callback(hObject, eventdata, handles)
% hObject    handle to c (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 c as text
%        str2double(get(hObject,'String')) returns contents of c as a double


% --- Executes during object creation, after setting all properties.
function c_CreateFcn(hObject, eventdata, handles)
% hObject    handle to c (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)

a=str2num(get(handles.a,'String'));
b=str2num(get(handles.b,'String'));
c=str2num(get(handles.c,'String'));
d=b^2-4*a*c;
if (d>0)

     X1=(-b+sqrt(d))/(2*a);
     X2=(-b-sqrt(d))/(2*a);
     set(handles.x1,'String',X1)
      set(handles.x2,'String',X2)

elseif (d==0)

        X1=(-b+sqrt(d))/(2*a);
        set(handles.x1,'String',X1)
      set(handles.x2,'String',X1)
else
     set(handles.x1,'String','roots are complex')
        set(handles.x2,'String','roots are complex')
end
function x1_Callback(hObject, eventdata, handles)
% hObject    handle to x1 (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 x1 as text
%        str2double(get(hObject,'String')) returns contents of x1 as a double


% --- Executes during object creation, after setting all properties.
function x1_CreateFcn(hObject, eventdata, handles)
% hObject    handle to x1 (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 x2_Callback(hObject, eventdata, handles)
% hObject    handle to x2 (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 x2 as text
%        str2double(get(hObject,'String')) returns contents of x2 as a double


% --- Executes during object creation, after setting all properties.
function x2_CreateFcn(hObject, eventdata, handles)
% hObject    handle to x2 (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 a_Callback(hObject, eventdata, handles)
% hObject    handle to a (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 a as text
%        str2double(get(hObject,'String')) returns contents of a as a double


% --- Executes during object creation, after setting all properties.
function a_CreateFcn(hObject, eventdata, handles)
% hObject    handle to a (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

this program simple will allow to enter coefficients of quadratic equation and then solve equation and try to find roots,how can i take screenshot of GUI interface after this program?please help me,i want to save figure which occurs after running of this program,thanks in advance

Answer 1

One of the quick and dirty approaches

myGUI = quadratic;
% ......
% do something or wait until it's done...
% ......
print(myGUI, '-dpng', 'GUIOUT.png'); % save as .png
print(myGUI, '-djpeg', 'GUIOUT.jpg'); % save as .jpg

It will work fine if you only take a screenshot.

However, if you encounter the problem for which the output picture does not have the same size as the figure on your screen (especially when saving as pdf), you will probably have to implement solutions describled in this article.

or even better using fig2file may work for you.