-------- Original Message --------
Subject:        Re: Google Earth miss-matches
Date:   Fri, 23 May 2008 22:21:44 -0700
From:   Matt Fox <[log in to unmask]>
To:     [log in to unmask], [log in to unmask]



I think it is simply the vector data is not as accurate as the
imagery.  Or the georeferencing of one the vector data just doesn't
quite match the imagery.  Shouldn't have anything to do with datums.
I'm sure they are always looking at improving the quality of their
source data, but I seriously doubt they will go through and manually
adjust road vectors to match the imagery.

Matt


On Fri, May 23, 2008 at 1:21 PM, Maps-L Moderator <[log in to unmask]> wrote:
> -------- Original Message --------
> Subject:        Google Earth miss-matches
> Date:   Fri, 23 May 2008 13:08:57 -0700 (PDT)
> From:   Tom Hanley <[log in to unmask]>
> To:     MAPS-L <[log in to unmask]>
>
>
> Are the miss-matches between the Google Earth maps and various polygons and
> lines like some water features, roads and some municipal boundaries due to
> data sets that have used different datums? Is there an effort to reconcile
> the miss-matches?
>
>
> Tom Hanley, Professor Emeritus of Geology
>
>
> Please use this Yahoo mail account for communications.
> Links to the ACRES projects and to Panama photos may be found at:
> http://chemgeo.ColState.edu/th_hp.htm
> "Rock Trails in Central Park" co-authored with M.M. Graff, is available for
> download at http://www.greenswardparks.org
>
>