Daniel@0: function gvizPath = setupPath()
Daniel@0: % Attempt to add GraphViz to the system path, (temporariliy within the
Daniel@0: % matlab session only). 
Daniel@0:     gvizPath = 'unknown';
Daniel@0:     if ~ispc()
Daniel@0:         return
Daniel@0:     end
Daniel@0:     try  %#ok
Daniel@0:         gvizPath = winqueryreg('HKEY_LOCAL_MACHINE','SOFTWARE\AT&T Research Labs\Graphviz', 'InstallPath');
Daniel@0:         addtosystempath(fullfile(gvizPath, 'bin'));
Daniel@0:     end
Daniel@0: end