[GeoJSON] RFC-2
Martin Daly
Martin.Daly at cadcorp.com
Mon Jun 4 07:25:42 PDT 2007
> Any other suggestions? In particular, if anybody has any
> other suggestions for crs conventions, it would be good to hear them.
OGC URNs (http://portal.opengeospatial.org/files/?artifact_id=16339) and
OGC WKT (http://portal.opengeospatial.org/files/?artifact_id=18241)
might be worth referencing.
Another madcap idea would be to devise a GeoJSON CRS object itself,
following the GeoJSON Object conventions, e.g.
"crs": {
"type": "Geographic",
"properties": {
"name": "Latitude/Longitude WGS_1984",
"datum": {
"type": "Geodetic",
"properties": {
"name": "WGS_1984",
"spheroid": {
"type": "struggling to think of a good type here",
"properties": {
"name": "WGS 84",
"semi_major_axis": 6378137.0,
"inverse_flattening": 298.257223562997
}
}
}
},
"prime_meridian": {
"type": "struggling here too",
"properties": {
"name": "Greenwich",
"longitude": 0.0
}
},
"units": {
"type": "Angular",
"properties": {
"name": "Degrees",
"to_radians": 0.0174532925199433
}
}
}
}
}
For the record, the matching OGC WKT is:
GEOGCS["Latitude/Longitude WGS_1984",DATUM["WGS_1984",SPHEROID["WGS
84",6378137,298.257223562997]],PRIMEM["Greenwich",0],UNIT["degrees",0.01
74532925199433]]
M
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