Also, the majority of the Google Earth Imagery is provided by the Maine Office of GIS and is the same imagery MDOT/E911 uses to adjust the spatial representation of their centerlines. Thomas A. Marcotte, GISP GIS Systems Analyst Maine Department of Transportation #16 State House Station Augusta, ME 04333 Phone: (207) 624-3183 Fax: (207) 624-3201 ________________________________ From: Maine GeoLibrary [mailto:[log in to unmask]] On Behalf Of Kane, Nate Sent: Thursday, September 18, 2008 7:35 AM To: [log in to unmask] Subject: Re: Planning Project Update I've found that MaineDOT and E911 are the sources that most accurately reflect reality in a vast majority of cases. There is no better source for road names and address ranges than E911 roads. MaineDOT's strength is the linework representation and associated attributes such as federal functional classification, jurisdiction, routes, and more. While far from perfect at the scales commonly used today, it does contain some the most accurate centerline representations known. MaineDOT also tries to have the road name attribute reflect the name shown in E911. Representatives of MaineDOT and E911 have convened many times in the past to develop common understandings of each other's processes, tools and needs in attempts to formulate plans for a centerline merger. While not completely dead, these efforts have not resulted in substantial changes in the data (due to differences in technological tools, the initial expense of time in establishing the "merged" basemap and the lack of any mandate to do so). It is worth noting that both centerline efforts started out as efforts to build and maintain basemaps at 1:24,000 back in the early to mid 90's. Both datasets now far exceed this level of detail. However, with the advent of aerial photos, this data is often used at scales of 1:1000 or finer. With the same or less staff to handle this much larger task, it may be some time before the linework hese datasets can consistently match photos at these scales. I've been in correspondence with NAVTEQ and given them a copy of MaineDOT centerlines. They stated that they would evaluate the data to see if they could use it, but even if the evaluation is favorable, they are actively maintaining their own graphical and logical representation, which makes it difficult to incorporate large amounts of changes (as is the case with E911 and MaineDOT). For them, the motivation to expend large amounts of time and energy is even less, since Maine is a relatively less-populated state and a majority of their end-users are tickled if they get within a tenth of a mile of their desired location (think Mapquest, Yahoo maps, navigation GPS and Google Maps). ___________________________________________ Nathan Kane, GIS Coordinator Maine Department of Transportation 16 State House Station, Augusta ME 04333-0016 (207) 624-3297, Fax-(207) 624-3301 [log in to unmask] <mailto:[log in to unmask]> ________________________________ From: Maine GeoLibrary [mailto:[log in to unmask]] On Behalf Of Davis, Greg Sent: Wednesday, September 17, 2008 5:30 PM To: [log in to unmask] 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 [log in to unmask] P Go Green! Print this email only when necessary. Thank you for helping Time Warner Cable be environmentally responsible. ________________________________ 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 This E-mail and any of its attachments may contain Time Warner Cable proprietary information, which is privileged, confidential, or subject to copyright belonging to Time Warner Cable. This E-mail is intended solely for the use of the individual or entity to which it is addressed. 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