[Talk-us] Importing Virginia road centerlines

[Peter Budny]

Josh, this sounds great!  Unfortunately, you're headed in to really new
territory.  As far as I can tell, OSM doesn't have any methods in place
for merging data in any meaningful sense, which sounds like what you
need to do.  (In other words, "Take X, Y and Z from this data, and Q and
P from this data, and put them together.")

I can't help you much, but I wish you lots of luck.  I've had my share
of disagreements with people about how OSM should deal with imports and
automated edits, so I wanted you to know that there are people out here
who encourage this kind of work.

~ Peter Budny

Josh Doe <josh at joshdoe.com> writes:

> I've been in contact with VITA, the agency responsible for GIS for the
> state of Virginia, USA. They are interested in OSM utilizing their
> road centerline data. VITA coordinates with all the localities in
> Virginia to obtain this information, though most of it is sourced from
> the Virginia Base Mapping Program (VBMP), which updates orthoimagery
> of Virginia every few years with resolution between 6-inches and
> 2-feet. This is the same data that is used for E911 in Virginia. From
> what I've seen thus far this data is very good, and certainly much
> better than the TIGER data.
>
> I'm totally new to importing, so I first wanted to see if anyone else
> is interested in this project, though I am willing to take the time to
> learn the process myself. Is the process used for importing the
> Canadian database [1] the best method for doing this?
>
> Of course I'm all for the standard rules of imports, don't destroy
> previous work, okay to blow away TIGER data in areas that haven't been
> touched by other mappers, but conflate in other areas, etc. I'll be
> taking this very slowly.
>
> Unfortunately the statewide RCL database doesn't contain address
> ranges, though some localities does provide that information. For
> example, Fairfax County provides RCL data in the public domain that
> includes this information. This of course leads me to believe that it
> is best to import the data on a locality by locality basis, if not
> even smaller regions.
>
> Again, don't think I'm about to do a massive import all of a sudden.
> Right now I'm looking for interest and feedback, and will begin to
> flesh out a wiki article about this import.
>
> Regards,
> -Josh
>
> [1]: http://wiki.openstreetmap.org/wiki/Geobase_NRN_-_OSM_Map_Feature
>
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-- 
Peter Budny  \
Georgia Tech  \
CS MS student  \