[Talk-us] tiger county boundaries

Kevin ksamples at uga.edu
Sat Oct 3 12:50:52 BST 2009


just an fyi for everyone to check out...
in addition to the tiger county boundaries for Hawaii, i added the U.S. 
Exclusive Economic Zone 
(http://www.openstreetmap.org/browse/relation/279001), the U.S. 
Contiguous Zone (http://www.openstreetmap.org/browse/relation/279045), 
and the U.S. Territorial Sea 
(http://www.openstreetmap.org/browse/relation/148838) around Hawaii.

kevin

Kevin wrote:
> i've imported the 2009 tiger county boundaries for Hawaii. 
> (http://www.openstreetmap.org/browse/relation/166563)  i was incorrect 
> when i said there are no tiger state boundaries, but they correspond 
> exactly to the county boundaries.  i agree with apollinaris, some state 
> data that may have been imported is probably still going to be better 
> than tiger.  but to clarify, i don't see any county boundaries that were 
> imported from the tiger datasets (us census bureau) which are 
> 1:100,000.  it looks like most of the existing counties were imported 
> from the usgs national atlas dataset which are 1:2,000,000.
>
> kevin
>
> Apollinaris Schoell wrote:
>   
>> let's do some analysis on the quality first. California has official  
>> county borders. they don't align with the existing Tiger county/city  
>> borders. Tiger data is very low quality and doesn't align at all with  
>> Topo 24k. Also where borders can be easily matched to features on  
>> ground in Yahoo  it's obviously wrong. If tiger 2009 is really high  
>> quality then we should import it. And this time do it clean without  
>> overlaps, relations for each county, align with state borders ....
>>   
>>     
>
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