On Tue, Jul 7, 2009 at 10:26 PM, Stefan de Konink<[email protected]> wrote: > SteveC wrote: >> inventing nodes, ways, segments (remember them?) > > You *did not* invent the spaghetti model, please give credit to the > original inventor Stan Aronoff, in Geographic information systems: A > management perspective (1989).
actually, OSM doesn't use the spaghetti model. according to [1,2], Aronoff's spaghetti model treats points as coordinates and lines as lists of coordinates - basically what the OGC's "simple features architecture" [3] uses - and there's no explicit connectivity. OSM, on the other hand, uses a topological model which comes from a graph theory background, so really we should be crediting Leonhard Euler. cheers, matt 1: http://www.unescap.org/stat/pop-it/pop-guide/gis_ch04.pdf 2: http://eprints.utm.my/6685/1/78062.pdf 3: http://www.opengeospatial.org/standards/sfa _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk
