[aprssig] strange map behavior
Gerry Creager N5JXS
gerry.creager at tamu.edu
Sun Aug 29 21:08:30 EDT 2004
Got a better shapefile archive James can use?
WA8LMF at aol.com wrote:
> Art Snapper wrote on 8/28/2004, 8:22 PM:
> > I have been playing around with aprs on my sail oat (nk8x-8) on Lake
> > Michigan. The maps on findu.com and aprsworld.net behave strangely for
> > plots on the lake. I captured a plot and saved it here:
> > http://lakemichiganfun.com/plot.png
> > Perhaps this is an old problem. I subscribe to the APRS sig in a
> > digest and must confess to not reading all the posts!
> The aprsworld maps that are used by findu are composed (like most GIS
> and map display systems) of multiple layers of data displayed one on top
> of the other. Highways, city streets, state and county boundries, etc
> may come from different sources with wildly differing levels of
> completeness and accuracy.
> There appear to be numerous errors and omissions in the database
> aprsworld uses to place bodies of water (ocean coastline, lakes, rivers
> and streams, etc) on the maps. I have noticed here on the west coast
> that many portions of the Pacific Coast Highway are "under water" also
> while several major lakes and reservoirs don't show at all!
> aprssig mailing list
> aprssig at lists.tapr.org
Gerry Creager -- gerry.creager at tamu.edu
Network Engineering -- AATLT, Texas A&M University
Cell: 979.229.5301 Office: 979.458.4020 FAX: 979.847.8578
Office: 903A Eller Bldg, TAMU, College Station, TX 77843
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