MATLAB: Problem with nested function in GUIDE

guiMATLABnestedpopupmenu

I have got following set of code – It is basically functioning based on the plot data obtained previously. Main function gets all the data and creates a popupmenu. Nested function help me get histogram for each plot individually.
    function pushbuttonhistogram_Callback(hObject, eventdata, handles)
    % hObject    handle to pushbuttonhistogram (see GCBO)
    % eventdata  reserved - to be defined in a future version of MATLAB
    % handles    structure with handles and user data (see GUIDATA)
    global filelist;
    global subitems_plot;
    global subsubitems_plot;
    item_index = get(handles.listboxitems, 'Value');
    items_list = cellstr(get(handles.listboxitems, 'String'));
    item = items_list{item_index};
    subitem_index = get(handles.listboxsubitems, 'Value');
    subitems_list = cellstr(get(handles.listboxsubitems, 'String'));
    subitem = subitems_list{subitem_index};
    subsubitem_index = get(handles.listboxsubsubitems, 'Value');
    subsubitems_list = cellstr(get(handles.listboxsubsubitems, 'String'));
    subsubitem = subsubitems_list{subsubitem_index};
    f = figure('Name','Histogram Plot','NumberTitle','off');
    figure(f);
    len = length(filelist);
    ax = axes('Parent',f,'position',[0.13 0.28  0.77 0.54]);
    uicontrol('Parent',f,'Style','popupmenu', 'String', filelist, 'Position',[81,54,419,23], 'Callback', @fileselect);
    function fileselect(source,event)
            val = source.Value;
    if isempty(subsubitems_plot)
        hist(ax, subitems_plot(:, val));
        title(ax, {item;subitem});
    else
        hist(ax, subsubitems_plot);
        title(ax, {item;subitem;subsubitem});
    end
    end
Problem: Not getting any kind of plot. If I add end after nested functioin am getting error –
Illegal use of reserved keyword "end".
and without 'end' nested function does not connect with main function.

Best Answer

The required format is clear: The main functions and nested function must be closed by an "end":
function main
  function nested1
  end
end
function sub1
end
It seems like there is a missing end anywhere in your code outside the posted part. Please control this by an auto-indentation: Ctrl-A Ctrl-I . Does the last line of the file end in the first column?
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