With R you can make beautiful graphics and the nice thing is, you can design your own customized graphics. For some nice graphs produced with R, have a look at http://addictedtor.free.fr/graphiques/.

 

At the moment I am working on a parking model (searching for parking lots in the city) and have a simple grid for the streets and the junctions. If you start working with network models you have the problem that there is basic information for every node and on top of that you have for every node your results. Trying to interprete the results is hard. Either