please just take a look at the OSM file i uploaded they are regions of NJ all split up into approximate regions. It looks pretty good.
Even if they are not the real zipcode, but approximates, they could be at least used to double check points. My idea is to take the points from the EPA that have zipcodes, counties and lat/long and then check if they all match. Given enough data we could look for inconsistencies. mike On Sun, Dec 20, 2009 at 5:43 PM, Jeff Barlow <j...@wb6csv.net> wrote: > Serge Wroclawski <emac...@gmail.com> wrote: > >>A Zip Code is a routing code. It doesn't represent geography any more >>than you can do a 1:1 mapping of iP address to physical location. >> >>You can do a "Pretty good" job by simplifying the data, but zip codes >>are attributes of addresses, not regions. >> >>If you want to add these zip codes to objects with addr fields, that >>would be accurate, but you can't accurately represent a zip code as a >>region. > > Huh... Well, if all that's true then how do you account for the > fact that many very good commercial printed maps, including the > wonderful Thomas Guides, have for many years included outlines of > Zip codes? > > Are we aiming for academic correctness or practical utility? > > -- > Later, > Jeff > > -- > Later, > Jeff > > _______________________________________________ > Talk-us mailing list > Talk-us@openstreetmap.org > http://lists.openstreetmap.org/listinfo/talk-us > _______________________________________________ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
