[Geojson] State of the GeoJSON
Raj Singh
raj at rajsingh.org
Thu Sep 27 15:28:43 PDT 2007
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:
* 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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