Want to draw two axes using a single popupmenu

I haven't used matlab gui before. I want to draw two plots using a popup menu. Suppose, I want to plot cm and mm values in two axes Using a popup menu which has multiple object names. So each time I select one option from popup menu it shows both cm and mm values in two different axes. Any help with an example is highly appreciated.

Answer 1

[Walter Roberson]

function popup1_Callback(hObject, event, handles)
  all_strings = get(hObject, 'String');
  if ischar(all_strings); all_strings = cellstr(all_strings); end
  which_chosen = get(hObject, 'value');
  chosen_string = all_strings{which_chosen};
  ax1 = handles.axes1;
  ax2 = handles.axes2;
  switch chosen_string
    case 'lollipop':
      plot(ax1, 1:20, rand(1,20));
      plot(ax2, 1:20, rand(1,20)*10);
    case 'ping-pong':
      plot(ax1, 1:20, randn(1:20));
      plot(ax2, 1:2), randn(1:20)*10);
  end

[ahasan ratul]

I have tried your code but it shows plots for only 1st popup menu. when i select 2nd one, It shows an error and the previous two graphs are not updated to new graphs.

Error in
matlab.graphics.internal.figfile.FigFile/read>@(hObject,eventdata)untitled('popupmenu1_Callback',hObject,eventdata,guidata(hObject)) 
Error while evaluating UIControl Callback

and

following is the code that i used:

    function popupmenu1_Callback(hObject, eventdata, handles)
% hObject    handle to popupmenu1 (see GCBO)
  all_strings = get(hObject, 'String');
  if ischar(all_strings); all_strings = cellstr(all_strings); end
  which_chosen = get(hObject, 'value');
  chosen_string = all_strings{which_chosen};
  ax1 = handles.axes1;
  ax2 = handles.axes2;
  switch chosen_string
    case 'head'
      plot(ax1, 1:20, rand(1,20));
      plot(ax2, 1:20, rand(1,20)*10);
    case 'head_end'
      plot(ax1, 1:50, randn(1:50));
      plot(ax2, 1:50, randn(1:50)*10);
  end

[Walter Roberson]

      plot(ax1, 1:50, randn(1:50));
      plot(ax2, 1:50, randn(1:50)*10);

should be

      plot(ax1, 1:50, randn(1,50));
      plot(ax2, 1:50, randn(1,50)*10);

Answer 2

[Munish Verma]

plot(ax1, 1:50, randn(1,50));

plot(ax2, 1:50, randn(1,50)*10);