how to share a single variables between different callbacks?

There are two parts-input and output.

Input components-

axes-axes1,axes2(for displaying the two input images)

radio buttons-to select the input image

pushbutton-Put Image(which wil put the given two images on axes 1 and axes2)

Output components-

pushbutton-Show image(which will show output images when the user click radio button of unput image)

axes-axes4 ,axes5(to display output image)

variables used-

C1= to set counter for each time the radiobutton is clicked

images{C1}=array to store image wen radio button of input image is clicked.

Function used-

store_images()-for storing the images whose radio buttons are clicked.

The gui code is here

     function varargout = r_b(varargin)

     % Begin initialization code - DO NOT EDIT

     gui_Singleton = 1;

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

     'gui_Singleton',  gui_Singleton, ...

     'gui_OpeningFcn', @r_b_OpeningFcn, ...

     'gui_OutputFcn',  @r_b_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 r_b is made visible.

      function r_b_OpeningFcn(hObject, eventdata, handles, varargin)

       handles.output = hObject;

       handles.C1 = 1;

       % Update handles structure

       guidata(hObject, handles);

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

      function varargout = r_b_OutputFcn(hObject, eventdata, handles)  

      varargout{1} = handles.output;

      % --- Executes on button press in radiobutton1.

      function radiobutton1_Callback(hObject, eventdata, handles)

      handles.C1 = handles.C1 + 1;

      filename =uigetfile({'*.jpg'});

      store_images(filename,C1)

      % --- Executes on button press in radiobutton2.

      function radiobutton2_Callback(hObject, eventdata, handles)

      handles.C1 = handles.C1 + 1;

      filename=getImage(axes(handles.axes2))

      store_images(filename,C1)

      % --- Executes on button press in pushbutton1.

      function pushbutton1_Callback(hObject, eventdata, handles)

      images=get(0,'UserData')

      axes(handles.axes4)

      imshow(images{1});

      axes(handles.axes5)

      imshow(images{2});

      % --- Executes on button press in pushbutton2.

      function pushbutton2_Callback(hObject, eventdata, handles)

      axes(handles.axes1)

      imshow('rice.png');

      axes(handles.axes2)

      imshow('1.jpg');

store_images function code is here-

     function [a b]=store_images(filename,C1)

     I=imread(filename);

     images1 = cell(1,30);

     images1{C1} = I;

     set(0,'Userdata',images1)

But this code is not working:( Any help will be appreciated!

Answer 1

[Stephen23]

Here are some good resources that will help you:

http://www.mathworks.com/help/matlab/creating_guis/share-data-among-callbacks.html

http://matlab.wikia.com/wiki/FAQ#How_can_I_share_data_between_callback_functions_in_my_GUI.28s.29.3F

http://www.mathworks.com/matlabcentral/answers/161396-how-do-i-pass-variables-between-timer-callback-functions

http://www.mathworks.com/matlabcentral/answers/7572-how-to-share-data-between-callback-functions-in-a-gui

http://www.mathworks.com/matlabcentral/answers/65720-how-to-share-variables-in-different-callback-function

http://www.mathworks.com/matlabcentral/newsreader/view_thread/248625

[preeti]

Thank you @Stepen .But stil have doubt.Suppose i have already images in axes 1 and I want to store that image in some variable Images{i} What should I do?

[Stephen23]

You could try getimage:

Images{k} = getimage(axes_handle);

or perhaps getframe and frame2im:

f = getframe;
[im,map] = frame2im(f);