[Geojson] State of the GeoJSON

[Christopher Schmidt]

On Thu, Sep 27, 2007 at 03:28:43PM -0700, Raj Singh wrote:
> I'm a little confused by the wording here. Let me try a rewrite, with  
> the additional information that there are *no* EPSG codes that do  
> decimal degrees in lon, lat order:

This sounds fine to me. I'll try and make it prettier over the weekend
and put it in unless I get complaints.

>    * Don't use EPSG codes if your data is in decimal degrees.
>    * Support OGC URNs, e.g.
>      {"type":"OGC",{"urn":"urn:ogc:def:crs:OGC:1.3:CRS84"}}
>      for decimal degrees: lon, lat
>    * EPSG:4326 in lon, lat order is called urn:ogc:def:crs:OGC:1.3:CRS84
>    * If you can find an EPSG code that fits your data, you should prefer
>      EPSG codes over OGC URNs.
>    * If you can't find an EPSG or OGC code that fits your data,
>       you should define a spatial reference URL. If you can't do that,
>       you should not include an SRS at all.
> 
> ---
> Raj
> 
> 
> On Sep 27, 2007, at 2:35 AM, Christopher Schmidt wrote:
> 
> >   * Support OGC URNs,
> >     {"type":"OGC",{"urn":"urn:ogc:def:crs:OGC:1.3:CRS84"}}
> >   * "Don't use EPSG:4326 or other CRSes in lat, lon order." If you  
> > have data
> >      in a projection which is defined to be in lat, lon order, you
> >      should either find another EPSG or OGC code to use. If you can't,
> >      you should define a spatial reference URL. If you can't do that,
> >      you should not include an SRS at all.
> >   * If your EPSG code doesn't use lat, lon order, you should prefer
> >     EPSG codes over OGC URNs.
> >   * EPSG:4326 in lon, lat order is called urn:ogc:def:crs:OGC: 
> > 1.3:CRS84
> 
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-- 
Christopher Schmidt
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