* [2010-12-05 00:29:05 +0600] Ivan Mikhailov <[email protected]> écrit:
] 1. What types of spatial things should be supported? ] ] 2. What operations should be supported? ] ] 3. What sorts of geometry should be supported? ] ] The problem is that costs of features are not additive, the total cost ] of the implementation is rather a product of three sums :| So the list ] of the needed features is much more important than the specific RDF ] format. Right. So this can be short-circuited in a pragmatic way by saying "whatever is supported by proj4 and geos" as Jamey suggested. That's not necessarily the best answer (in an ideal world we'd have proper 3 dimensional coordinates instead of 2.5) but it's enough to get started -- it would make Virtuoso a viable alternative to PostGIS or Oracle for geodata. Cheers, -w -- William Waites http://eris.okfn.org/ww/foaf#i 9C7E F636 52F6 1004 E40A E565 98E3 BBF3 8320 7664
