On Sun, Oct 19, 2008 at 10:54:55AM -0700, Dave Hansen wrote: > Has anyone looked at importing the TIGER 2007 data yet? I was going to > start coding up the conversion utilities to get started. It appears > that this shapefile format may have existing OSM converters out there. > Anyone want to admit to having one? ;) >
I see it like this: What could be very useful to have, is a mapping between tiger data (old set) and OSM data. It could be to late for this round, but an external_id:tiger = XXXX that you'd *never* remove, is a good thing. That'll help when updating. Then you'll need to to a diff between the old data and the new data, and find out which ID's are candidates for updating. Then you could do a diff between old and OSM for those IDs. Anything that's not touched in OSM --> update. Anything else, I'm sure you'll have to do more or less manually, but I'm sure you could automatize bits of it - like road classification changes, name changes etc. This is my rough proposal for how to handle large chunks of external data. -- - Vegard Engen, member of the first RFC1149 implementation team. _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
