[PostGIS] #5734: Wrong ST_EstimatedExtent result for geography column
PostGIS
trac at osgeo.org
Thu May 23 02:31:02 PDT 2024
#5734: Wrong ST_EstimatedExtent result for geography column
----------------------+---------------------------
Reporter: strk | Owner: pramsey
Type: defect | Status: new
Priority: medium | Milestone: PostGIS 3.4.3
Component: postgis | Version: 3.4.x
Resolution: | Keywords:
----------------------+---------------------------
Comment (by strk):
So next problem is how to tell, from just reading the stats, whether the
ND_BOX is geocentric or not, because that seems dependent on whether the
column being analyzed is of type geography or geometry, but there's no
such indication in the ND_STATS structure to read, am I right ? Also,
there doesn't seem to be a Z value for the geodetic ones, isn't that
mandatory to convert between geocentric and not ?
{{{
strk=# select jsonb_pretty(_postgis_stats('qgis_issue_30294_geom',
'g')::jsonb -> 'extent');
{
"max": [
20.15,
30.2
],
"min": [
-10.15,
-10.2
]
}
strk=# select jsonb_pretty(_postgis_stats('qgis_issue_30294', 'g')::jsonb
-> 'extent');
{
"max": [
0.970627,
0.298534
],
"min": [
0.813017,
-0.173346
]
}
}}}
--
Ticket URL: <https://trac.osgeo.org/postgis/ticket/5734#comment:11>
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