Customized Zoom function - Getting the clicked figure Tag

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Magnus Hök 2013년 5월 2일

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https://kr.mathworks.com/matlabcentral/answers/74362-customized-zoom-function-getting-the-clicked-figure-tag

Hi all

I'm quite new to MatLab programming and have encountered a problem...

I've written a script that collects data and presents these data to a GUI which contains different presentations of the same data. The GUI contains 8 figures.

What I want to do is to use the zoom function (by clicking the zoom icon in the meny bar), select a figure, drag to select the new X- and Y-axis limits and then update ALL 8 figures in the GUI based on the new axis limits. I cannot use linkaxes due to the necessity to do a lot of recalculations based on the limit selection for each figure.

When browsing around I found how to get the selected limits according to:

     % --------------------------------------------------------------------
    function uitoggletool1_ClickedCallback(hObject, eventdata, handles)
    % hObject    handle to uitoggletool1 (see GCBO)
    % eventdata  reserved - to be defined in a future version of MATLAB
    % handles    structure with handles and user data (see GUIDATA)
    disp('Zoom tool clicked');
    h = zoom;
    set(h,'ActionPreCallback',{@myprecallback,handles});
    set(h,'ActionPostCallback',{@mypostcallback,handles});
    set(h,'Enable','on');
    %
    function myprecallback(obj,evd, handles)
    disp('A zoom is about to occur.');
    %
    function mypostcallback(obj,evd, handles)
    NewXLim = get(evd.Axes,'XLim');
    %disp('X-limits '), NewXLim
    NewYLim = get(evd.Axes,'YLim');
    %disp('Y-limits '), NewYLim
    %Get the tag of the selected figure in the GUI
    h1 = gco;
    Update_All_Figures(h1, NewXLim, NewYLim, handles);
%  
  function Update_All_Figures(h1, xlim, ylim, handles)
  disp('Entering function Update_All-Figures...')
  disp('Figure tag '), h1
  disp('X-limits '), xlim
  disp('Y-limits '), ylim
    %Find out which figure was clicked...
    if h1 == handles.ScatterTag
        disp('Scatter plot zoomed...')
        %Update active data and replot all figures here...
    elseif h1 == handles.xHistoTag
        disp('X histogram was zoomed...')
        %Update active data and replot all figures here...
    elseif h1 == handles.yHistoTag
        disp('Y histogram was zoomed...')
        %Update active data and replot all figures here...
    elseif h1 == handles.thetaHistoTag
        disp('Theta histogram was zoomed...')
        %Update active data and replot all figures here...
    elseif h1 == handles.RegistrationTag
        disp('Registration plot was zoomed...')
        %Update active data and replot all figures here...
    elseif h1 == handles.MountScanOrderTag
        disp('Mount/Scan plot was zoomed...')
        %Update active data and replot all figures here...
    elseif h1 == handles.dXdYTag
        disp('dx/dy error was zoomed...')
        %Update active data and replot all figures here...
    elseif h1 == handles.dfiTag
        disp('dFi error was zoomed...')
        %Update active data and replot all figures here...
    else
        disp('Figure not recognized. Try again!')
    end

Note that the handles structure contains the tags to all 8 plots.

When I run the code I get different values of figure tag (h1 in the code). Sometimes the gco command returns the correct figure tag and sometimes not.

Anybody has any ideas?

TIA

Magnus