Over at Semiosys, Elie has been working on a new social network analysis piece called GraphDuplex. GraphDuplex allows you to couple N graphs by shared attributes. The use of petals and histograms is an alternative to the traditional pie chart where sectors can easily be missed due to relative segment sizes. The thickness of the line denotes volume and can be easily also denote flow if the that were relevant. Acceleration could also be represented by a rotating decal with rotational speed indicated rate of change.