SRIDs above 999000 are reserved by PostGIS. The main use I've seen for
them is with _ST_BestSRID as part of area or length calculations. Most
of them are equivalent to EPSG codes that are normally in
spatial_ref_sys. For example, 999000 is equivalent to EPSG:3395, but the
latter may not be present on a system. You can see what they are in
https://git.osgeo.org/gitea/postgis/postgis/src/branch/master/libpgcommon/lwgeom_transform.h
and the proj4 text is in
https://git.osgeo.org/gitea/postgis/postgis/src/branch/master/libpgcommon/lwgeom_transform.c.
On 2020-10-02 6:17 a.m., Imre Samu wrote:
>> PostGIS references SRID 999155.
> That feels like a bug. File and line number?
As I see the "not public" _ST_BestSRID return this.
select _ST_BestSRID(ST_Point(147,-60));
_st_bestsrid
--------------
999155
(1 row)
( via https://github.com/postgis/postgis/search?q=999155 )
Imre
Greg Troxel <[email protected] <mailto:[email protected]>> ezt írta
(időpont: 2020. okt. 2., P, 13:22):
Simon G Greener <[email protected]
<mailto:[email protected]>> writes:
>
> PostGIS references SRID 999155.
That feels like a bug. File and line number?
> What is it? It is not listed on reference.org
<http://reference.org>.
I find no trace of it.
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