From Bob White, E911 GIS Manager:

The layer e911rds is updated on a daily basis as towns report changes to 
their addressing data. Commercial data providers are often many months 
behind as they are updateing the entire country.

As for differences between e911rds and the MeDot roads these are usually 
minor and are often resolved through the maintenance process as it 
pertains to spatial issues.

When it comes to attribute issues the two data layers are for different 
bussiness needs and therefore maintained differently.

For the past 10 plus years we have periodocally met and discussed how 
these two data layers could be merged into a single layer. This week I 
have been attending a workshop at the national level where that very topic 
had an entire day dedicated to it.

As far as which data layer is better as a general rule the two data sets 
that Maine maintains are updated frequently. Which one is better between 
those two really depends on your needs.

I will be traveling back home tomorrow and am willing to discuss this next 
week in detail.

Bob
Bob White, from a Blackberry




"Davis, Greg" <[log in to unmask]> 
Sent by: Maine GeoLibrary <[log in to unmask]>
09/17/2008 05:30 PM
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Subject
Re: Planning Project Update






Good List, however I would like to mention that from my preliminary review 
of the E911 centerlines and MEDOT centerlines in comparison to centerline 
of 2 most widely used sources (NAVTEQ and TELEATLAS) for street data in 
comparison or overlaid to Google Earth.  I have found that there is a lot 
of mismatch between Google and our local (E911 & MEDOT) sources.
 
Has anyone else seen this?  What source is considered to be correct or 
mostly correct?
 
All your input would be appreciated as I?m under a task of developing a 
new state landbase and then there is addressing, not address ranges.  That 
is another question that can wait, but address ranges without knowing what 
that towns standard (50, 100?, or 200?) becomes very difficult to 
determine.  Then you have towns that have their parcel data with 
addressing posted to their websites, but we don?t have access to that data 
from the state website.
 
All input and suggests are welcome.
 
Thanks,
 
Greg Davis
Time Warner Cable
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From: Maine GeoLibrary [mailto:[log in to unmask]] On Behalf Of 
Will Mitchell
Sent: Wednesday, September 17, 2008 5:02 PM
To: [log in to unmask]
Subject: Planning Project Update
 
In a continuing effort to keep the Maine GeoSpatial community aware of the 
actions taking place on the GeoLibrary Board's strategic planning efforts, 
the Sewall Team has summarized input received from the Maine Geospatial 
community, the 2002 Strategic Plan and the GeoLibrary Board and provided 
the following chart entitled, "Overall Maine GeoSpatial Listing of Issues 
and Action Items."  The chart attempts to summarize the action items and 
issues needing resolution.  Each issue or action item has a "potential 
solution" indicated for it, a time frame for implementation and a 
priority.
 
We would appreciate it if you could take a look at this summary and 
provide us with input on them by sending an e-mail to: 
[log in to unmask] with the subject heading noted as "Maine 
Stakeholder Input."
 
Once again, we thank you for your time and effort.
 
On behalf of Bill Hanson, GeoLibrary board chair?
 
Will Mitchell 
Mitchell Geographics, Inc.
188 State Street, Suite 200
Portland, ME 04101 
Office:  207.879.7769
Mobile: 207.650.2057
Fax:  207.221.5861
www.mitchellgeo.com
 
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