[postgis-users] prj2esri.org

Clifford Snow clifford at snowandsnow.us
Tue Jan 12 15:28:16 PST 2016


On Tue, Jan 12, 2016 at 1:17 AM, Andrea Aime <andrea.aime at geo-solutions.it>
wrote:

> When you paste a PRJ, first it parses it and tries to perform a match
> against the official EPSG database, by first making an indexed
> search by projection name and a few other params, falling on a brute force
> scan and compare if the first does not match.
> If not even that works, then it has a secondary Lucene index with all
> projections WKTs stored inside, and it will do a
> text based search against it, hoping to find something similar (aka "shot
> in the dark").
>

Thanks for the explanation. The process on the surface seems
> straightforward enough. I was expecting that a tool like proj would be used
> to normalize the file. This actually makes great sense now that I think
> about it.


Thanks,
Clifford


-- 
@osm_seattle
osm_seattle.snowandsnow.us
OpenStreetMap: Maps with a human touch
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