[Geojson] simple 3D geocode for AR

[Panagiotis (Peter) A. Vretanos]

Mike Liebhold wrote:
> A friend wrote me with a request for clarification on a topic we've 
> discussed many times here,  but every time we've approached a consensus 
> the answer seems elusive.
> 
> Many devleopers are starting to create applications for iPhones and 
> Android phones to view location specific data  through the viewfinder 
> using the -imprecise- capabilities of the built in gps and compass and 
> applications platforms like Layar.
> 
> The question:
> 
> What is the -simplest- way to geocode a geoannotation in 3D using 
> geoRSS/Atom, geojson, KML ....?
> 
> (Is there a practical reason why WGS '84 shouldn't be implicit, and a 
> CRS  lookup NOT be required?)
> 
> 
> _______________________________________________
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> Geojson at lists.geojson.org
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> 
Mike,

GeoRSS GML already says that if you do not specify an srsName on the geometry 
then it is assumed to be WGS84 in decimal degrees.

I think the same is true from GeoJSON.

KML uses a fixed CRS with the identifier LonLat84_5773.

As for which encoding is simplest for 3D annotations on iPhone/Android phones 
... dunno!

The simplest example of each of these encodings is pretty simple.

On the other hand, you could probably create some pretty long/complex entries too.

Ciao.





-- 
Panagiotis (Peter) A. Vretanos          CubeWerx Inc.
Big Kahuna (Senior Database Developer)  http://www.cubewerx.com
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