On 1/9/13 11:27 AM, Andrew Guertin wrote:
On 01/07/2013 10:45 PM, Richard Welty wrote:
On 1/7/13 10:37 PM, the Old Topo Depot wrote:
We do have an issue with US state and county borders, as some are
missing, incorrect, incomplete or incorrectly tagged. Perhaps we
can organize a cleanse the state and county borders project to
improve the data quality and currentness.
i would like to switch the USGS based state border of NY for what i
perceive to be the somewhat more accurate borders from TIGER. i've
temporarily stalled on bringing in town borders from TIGER because of
discrepancies along the state line between NY and New England. i
gather that many of the state borders are USGS and that the TIGER
borders may be better. this is a non-trivial exercise as any
county/town borders that share ways with the state borders will need
to be fixed up.
richard
If and when you do this, could you compare to the VCGI data for the
NY/VT border at
http://www.vcgi.org/dataware/?page=./search_tools/search_action.cfm&query=theme&theme=003&x=17&y=6
(BoundaryOther_BNDHASH layer)?
yes, i can do that. the current state border is USGS, which looks to be
worse that TIGER (i make no
claims of perfection in TIGER, i'd get laughed off the list if i did that.)
I plan to import VT town boundaries from that file at some point, but
was not planning on touching any of the state boundaries (except to
connect town boundaries to them). I'd be interested to know how well
that data source matches others for the state boundary, too, though.
to the extent that these various data sources don't line up, we have a
research problem, and i'm in
no hurry to do an ill advised border import and create a need for a
massive cleanup project.
richard
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