title: Use Matlab PDE toolbox from command line
body: <p>I would like to solve a PDE with Matlab PDE toolbox using only the command window of the system. I can create the problem and run the solver, but the PDE toolbox window pops up occaisionally and asks questions (e.g., "Do you want to save unsaved document?").</p>
  
  <p>How can I avoid these popups or how can I use the PDE toolbox without opening its window?</p>
  
  <p>I am using the following code. The window is pops up when I call the <code>pdeinit</code> function on the first line.</p>
  
  <pre><code>[pde_fig,ax]=pdeinit;
  set(ax,'XLim',[-0.1 0.2]);
  set(ax,'YLim',[-0.1 0.2]);
  set(ax,'XTickMode','auto');
  set(ax,'YTickMode','auto');
  
  % Geometry description:
  pderect([0 0.05 0.05 0],'R1');
  pderect([0 0.1 0 0.1],'R2');
  set(findobj(get(pde_fig,'Children'),'Tag','PDEEval'),'String','R2-R1');
  ...
  </code></pre>