[mapserver-users] project onto a globe?
Gerry Creager N5JXS
gerry.creager at tamu.edu
Tue Nov 26 18:59:52 PST 2002
The prototypical site for all things GIS for the non- or new GIS
practitioner, in my mind, is the Geographer's Craft. Here's the map
projections
intro:http://www.colorado.edu/geography/gcraft/notes/mapproj/mapproj_f.html
And the homepage:
http://www.colorado.edu/geography/gcraft/contents.html
Gerry
Drew from Zhrodague wrote:
>>Tom -
>>
>>If I understand correctly, what you folks in the UK call a "2D representation of a globe" is known as a "circle" over here <g>.
>>
>>Is that right? There are certainly map projections available that project the surface of the entire Earth onto a circle, such as the Azimuthal Equidistant. However, they of necessity introduce gross distortions at the edges (away from the center point of the projection). This is also true of projections like Mercator and your example map, but those projections are common enough that they "look normal" to most people.
>>
>>You can see a good example of the Azimuthal Equidistant used to map the whole Earth (centered on North America) at:
>>
>>http://www-ccs.ucsd.edu/gmt/doc/html/GMT_Docs/node86.html
>
>
> Anyone have a link for a brief desctiption of the different
> projections, for s non GIS people?
>
> I'd like to render our maps onto a flat-model, just not sure which
> projections do what.
>
> --
>
> drew at zhrodague.net
> http://www.WiFiMaps.com
--
Gerry Creager -- gerry.creager at tamu.edu
Network Engineering, Academy for Advanced Telecommunications
Texas A&M University, College Station, TX
Office: 979.458.4020 FAX: 979.847.8578 Cell: 979.229.5301
Page: 979.228.0173 -or- gcreager at my2way.com
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