MATLAB: Slider Using GUIDE with Code Example

guiguideslider

I want to scroll through multiple plots using a slider
inside GUIDE. I have used this code template that was recommended
to me on the MATLAB's site.
Although this is for external GUI development
and not specifically for GUIDE.
How can I modify it so it will work inside GUIDE?
Here is the code:
 function [] = slider_plot()
% Plot different plots according to slider location.
S.fh = figure('units','pixels',...
            'position',[300 300 300 300],...
            'menubar','none',...
            'name','slider_plot',...
            'numbertitle','off',...
            'resize','off');    
S.x = 0:.01:1;  % For plotting.         
S.ax = axes('unit','pix',...
          'position',[20 80 260 210]);
plot(S.x,S.x,'r');        
S.sl = uicontrol('style','slide',...
               'unit','pix',...
               'position',[20 10 260 30],...
               'min',1,'max',3,'val',1,...
               'sliderstep',[1/2 1/2],...
               'callback',{@sl_call,S});  
function [] = sl_call(varargin)
% Callback for the slider.
[h,S] = varargin{[1,3]};  % calling handle and data structure.
cla
switch round(get(h,'value'))
    case 1
        cla
        plot(S.ax,S.x,S.x.^1,'r')
    case 2
        cla
        plot(S.ax,S.x,S.x.^2,'b')        
    case 3
        cla
        plot(S.ax,S.x,S.x.^3,'k')         
    otherwise
        disp('cannot plot')
end
Thanks,
Amanda

Best Answer

Right click your slider in GUIDE and view the callback function. Then put this code in there:
% First get S.  See the FAQ for methods to do that.
% http://matlab.wikia.com/wiki/FAQ#How_can_I_share_data_between_callback_functions_in_my_GUI.28s.29.3F
sliderValue = int32(get(handles.slider1, 'Value'));
switch sliderValue 
    case 1
        cla;
        plot(S.ax,S.x,S.x.^1,'r');
    case 2
        cla;
        plot(S.ax,S.x,S.x.^2,'b');        
    case 3
        cla;
        plot(S.ax,S.x,S.x.^3,'k');        
    otherwise
        message = sprintf('No case for slider value of %d', sliderValue);
        uiwait(warndlg(message));
end
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