[Geojson] "Application schema" for GeoJSON?

[Richard Barnes]

Hi all,

First, since I'm new to the list, I'm Richard Barnes.  I've been working 
in the IETF GEOPRIV working group [1] for a while, but I just found out 
about GeoJSON, and had a quick question.

A lot of applications need slightly more advanced geometries than the 
point aggregates that are currently in GeoJSON.  For example, the 
current draft W3C Geolocation API [2] essentially describes a point with 
horizontal and vertical uncertainty radii, i.e., (essentially) an 
ellipsoid.  At the same time, these applications don't need the full 
expressiveness of full GML.  The typical way to deal with this situation 
seems to be to define application schemas that profile GML, for example 
the PIDF-LO application schema we use in GEOPRIV [3].

So what I was wondering if it might be worthwhile to port one of these 
application schemas over to GeoJSON, i.e., to translate the XML fields 
over to JSON.  This could be done either within the main GeoJSON spec, 
or as a separate extension document.  For the purpose of discussion, 
I've made an extended version of the current spec that supports the 
PIDF-LO application schema [4].  (FWIW, I think this would more or less 
meet the needs of the W3C group.)

Would this be worth doing?  Current document or a new one?

Thanks,
--Richard


[1] <http://tools.ietf.org/wg/geopriv/>
[2] <http://www.w3.org/2008/geolocation/>
[3] <http://www.ogcnetwork.net/node/215>
[4] <http://geopriv.dreamhosters.com/geojson/geojson-spec.html>