[sr.org] Discussion of open and authoritative projection databases

[Julien Moquet]

Dear all,

Alright, we should start we these :
- spatialreference
- epsg.io
- projections/index.html
- https://github.com/ebrelsford/projestions#api
- http://www.epsg-registry.org/
- ESRI

Now we can seek for their projection databases format.

Spatialreference est écrit en python avec django (REST). I don't know about
the native format it uses, but we could ask Howard. I am not sure if it is
a SGBDR.

EPSG.io uses the epsg registry parsed into a sqlite database (about 36Mo),
unreadable.

projections/index.html is using Sphinx templating.

https://github.com/ebrelsford/projestions#api is EPSG <http://www.epsg.org/>'s
CRS data over a postgist table i think.

http://www.epsg-registry.org/ I don't really know. It seems to be private
code. Eventhough, we can download raw data from it in 5 different format.

ESRI. I don't know. Manfred ?

Regards,
Julien.
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