Hi all,
During the imports support group conference call, the question of import tools was raised. I can't quite recall everyone's point of view, but I think that the general idea was "the more tools, the better". I'm all for an unix-like approach: lots of small specialised tools, that work together in order to do an import. Right now we got conversors, filters, uploaders and whatnot. But one thing I'm missing is a "polygon relationificator". Let me explain. Let's suppose I've got a shapefile/GML/spatialite file full of polygons; and such polygons do not overlap each other, and are adjacent to each other to cover a large area. Think land use and administrative areas. And, as defined in http://wiki.osm.org/wiki/Multipolygon , we can have multipolygons with several outer ways - which will be joined together when exporting to another format (e.g. osm2pgsql). You can see where this goes. If the input polygons are non-overlapping and adjacent, I could redraw the edges of the polygons as graph edges, put a graph node whenever three (or more) polygons touch each other, and then apply some graph theory to convert every polygon to a set of graph edges ( = relation of ways = multipolygon with several outer ways ) IMHO, this would be good not only for data imports, but also for integrity checks (detect overlaps) and cleanup, given OSM input and OSM output. Question is: Is such a tool available? If not, who has interest in making such tool? Cheers, -- ---------------------------------- Iván Sánchez Ortega <i...@sanchezortega.es> La tradición es la personalidad de los imbéciles.- Maurice Ravel. _______________________________________________ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
