On Sep 2, 9:40 pm, bratliff <[EMAIL PROTECTED]> wrote: > > I am using the same Census Department cartographic boundary files you > are using. With the exception of one county added to Colorado since > 2000, I am not aware of any discrepencies. Wikipedia allows anyone to > edit it.
I think this is what I remembered about inaccuracies: From: http://www.census.gov/geo/www/cob/shape_info.html "Please note: The first four fields - Area, Perimeter, xxnn_d00_, xxnn_d00_I are produced as a by-product of the cartographic boundary file creation process, and have no meaning for public data users, therefore, ignore or delete these fields." and from: http://www.census.gov/geo/www/cob/scale.html "The cartographic boundary files are a generalized extract from the U.S. Census Bureau's TIGER database. Line simplification/smoothing was performed with a tolerance of 0.005 decimal degrees and a coordinate reduction using the Douglas-Peucker method with a tolerance of 0.0003 decimal degrees. Very small polygons were eliminated when the combination of geographic codes existed elsewhere." So, discrepancies are no surprise. -- Marcelo - http://maps.forum.nu -- --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Maps API" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/Google-Maps-API?hl=en -~----------~----~----~----~------~----~------~--~---
