Graph classes that builds and walk networks based on Feature relationships. The original graph package has been developed using the JUMP Feature API. Its intension is to be able to aid automated skeletonization of water bodies by computing directionality of generated skeletons. The work for the original JUMP based library has been funded by the BC Proventional Government department of BMGS. This library has been ported to geotools2 as part of the VWFS project sponcered ...