[Talk-us] MA county boundaries

Peter Dobratz peter at dobratz.us
Tue Aug 21 15:00:06 BST 2012


Personally, I think it's easier to work from smallest to largest.  I've
been trying to keep track of the boundaries relations that have been
created here:

http://wiki.openstreetmap.org/wiki/Massachusetts/Boundary_Relations

It seems to be easiest to go town by town and then once you have all the
towns in a county, to clean up the county boundary.  Then once you have all
the county boundaries, clean up the state boundary.

This is a potential source for the territorial waters in the sea:

http://www.mass.gov/czm/mapping/czboundary.htm

TIGER also has county subdivisions for MA that can be used.

Whether you work smallest to largest or largest to smallest, it should be
possible to work on this concurrently without stepping on each other's
toes.  As long as you are making the boundaries more accurate each time you
edit them, then we'll eventually get to where there are sections of the
county/state/municiple boundaries that are one in the same.

Note: use fiveisalive may prefer to communicate via wiki.  See:

http://wiki.openstreetmap.org/wiki/Talk:MassGIS#admin_boundaries_in_Boston_area.3F

Also note: portions of the town boundaries in MA where imported improperly
resulting in duplicate Ways being uploaded.  If you notice up to a dozen
Ways on top of each other, all with the same tags, then delete all but one
of them before adding to the new boundary relation for the town.

On Mon, Aug 20, 2012 at 10:59 AM, Metcalf, Calvin (DOT) <
calvin.metcalf at state.ma.us> wrote:

> I’ve been slowly editing the county boundaries in MA and today noticed
> somebody else (a user named fiveisalive) is also editing them, so I sent
> him the following message and suggest we coordinate our efforts here.****
>
> ** **
>
> Hey I see you've been editing the county boundaries for MA as have I and
> we seem to be working against each other.  I was merging the county
> boundaries with the state boundaries (same way, different relations) as a
> step one before as a step two fixing the state boundary, while you seem to
> be fixing the county boundaries while leaving the state boundaries alone.
> The two issues I can think of with your method are ****
>
> ** **
>
> 1. I'm not so sure how accurate the off shore county boarders are.  Both
> as compared to their offshore town boundaries (which they updated 1 year
> ago vs 5 years ago for the counties) and as compared to OSMs definition of
> the boundaries. ****
>
> 2. The state offshore boundaries are one and the same as the offshore
> county boundaries as all parts of the Massachusetts are within counties and
> all parts of counties are within cities or towns (note other state are not
> like this).****
>
> ** **
>
> Feel free to message me back, or email me via the us-talk or import list**
> **
>
> ** **
>
> ** **
>
> Calvin  Metcalf****
>
> Office of Transportation Planning****
>
> MassDOT****
>
> ** **
>
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>
>
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