Hi guys,
I'm not sure what is going on here:
I am working with some strata boundaries for a fisheries survey, mostly depth
based strata. SRID=4326
I also have some polygons of areas of untrawlable seabed & want to generate
these cropped by stratum. SRID=4326
Aas a step in this process I create a new table with a single multipolygon
comprising the geomunion of all the hole polygons. SRID=4326
insert into hole_multi
select 1, geomunion(geom) from holes;
If I run a query on this table:
select srid(hole), astext(hole) from hole_multi;
I get:
4326 | MULTIPOLYGON(SRID=0;((55.78 ....
So the SRID of the column is 4326, but each constituent polygon of the
multipolygon, despite coming from a 4326 dataset, seems to be set internally to
SRID=0.
The result is the same with:
insert into hole_multi
select 1, setsrid(geomunion(geom),4326) from holes;
Any ideas?
Thanks,
Brent Wood
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