wolffd@0: classdef Radiallayout < Gvizlayout
wolffd@0: % A layout that also uses graphviz but calls twopi instead of neato to 
wolffd@0: % to display the graph like a tree. 
wolffd@0: %
wolffd@0: % Matthew Dunham
wolffd@0: % University of British Columbia 
wolffd@0: % http://www.cs.ubc.ca/~mdunham/  
wolffd@0:     methods
wolffd@0:        function obj = Radiallayout(name)
wolffd@0:             if(nargin < 1)
wolffd@0:                 obj.name = 'Radiallayout';
wolffd@0:             else
wolffd@0:                 obj.name = name;
wolffd@0:             end
wolffd@0:             load glicons;
wolffd@0:             obj.image = icons.radial;
wolffd@0:             obj.shortDescription = 'Radial Layout (GraphViz)'; 
wolffd@0:        end
wolffd@0:        
wolffd@0:         function available = isavailable(obj)
wolffd@0:         % Make sure graphViz is available. 
wolffd@0:             available = Gvizlayout.queryGviz('twopi');
wolffd@0:             if(not(available))
wolffd@0:                    fprintf('Please install or upgrade graphViz\n');
wolffd@0:             end
wolffd@0:         end
wolffd@0:        
wolffd@0:     end
wolffd@0:     
wolffd@0:     methods(Access = 'protected')
wolffd@0:       
wolffd@0:        function callGraphViz(obj)
wolffd@0:        % Call GraphViz to determine an optimal layout. Write this layout in
wolffd@0:        % layout.dot for later parsing. 
wolffd@0:            err = system(['twopi -Tdot -Gmaxiter=5000 -Gstart=7 -o ',obj.layoutFile,' ',obj.adjFile]);
wolffd@0:            if(err),error('Sorry, unknown GraphViz failure, try another layout'); end
wolffd@0:        end
wolffd@0:        
wolffd@0:       
wolffd@0:       
wolffd@0:     end
wolffd@0:    
wolffd@0: end