Something I did notice though-- it seems that if the input polygon completely
surrounds a polygon stored in my database, it is not included in the result. I
read something about this here: http://postgis.net/docs/ST_Overlaps.html
"Returns TRUE if the Geometries "spatially overlap". By that we mean they
intersect, but one does not completely contain another."
I do need the polygons which are completely contained as well. Can this be
done?
Thanks again for the help. I'm getting there!
Regards,Joseph Spenner
From: Joseph Spenner <[email protected]>
To: Rémi Cura <[email protected]>; PostGIS Users Discussion
<[email protected]>
Sent: Tuesday, November 18, 2014 8:35 AM
Subject: Re: [postgis-users] Returning polygons if any of a polygon input
points lie in the polygons
Rémi: Yes, that worked perfectly. Thanks! My input poly will be stored in
another database (maybe just another table). It would be nice to perform the
query all on 1 line (get the poly and use it for the query), but I can query
the first table first to get the input poly, then use that for the 2nd query
without too much difficulty.
Thanks again for the responses!
Regards,Joseph Spenner
If life gives you lemons, keep them-- because hey.. free lemons.
"~heart~ Sticker" fixer: http://microflush.org/stuff/stickers/heartFix.html
From: Rémi Cura <[email protected]>
To: PostGIS Users Discussion <[email protected]>
Cc: Joseph Spenner <[email protected]>
Sent: Tuesday, November 18, 2014 4:20 AM
Subject: Re: [postgis-users] Returning polygons if any of a polygon input
points lie in the polygons
Something like this?
SELECT zone,gid,state,name,ST_Asgeojson( geom )
FROM polys
WHERE ST_Overlaps(ST_GeomFromText('POLYGON((-109 42,-108 42, -108 43; -109 43,
-109 42))', 4269), geom)=TRUE;
Cheers,
Rémi-C
2014-11-18 9:00 GMT+01:00 Hugues François <[email protected]>:
Hello, Maybe I don’t understand your problem very well but I think your query
for points should work with a polygon using ST_GeomFromText
(http://www.postgis.org/docs/ST_GeomFromText.html) for your input polygon or a
subquery if it stored into your DB. Hugues. De :
[email protected]
[mailto:[email protected]] De la part de Joseph Spenner
Envoyé : lundi 17 novembre 2014 22:35
À : PostGIS Users Discussion
Objet : [postgis-users] Returning polygons if any of a polygon input points lie
in the polygons Hello, I'm trying to perform a query which will return any
polygons which have any points in common with an input polygon. So, if I have
Polygon A.In my database, I have several other polygons stored. I want to
submit a query with Polygon A as the input, which will return all of the
polygons in my database which have any points in common with Polygon A. Can
this be done?
I found this:http://postgis.net/docs/ST_Overlaps.html But from what I can tell,
it only returns a T or F. I need to fetch the actual polygons if T. I'm
currently able to query with points as input: select
zone,gid,state,name,ST_Asgeojson( geom ) from polys where
ST_Intersects(ST_PointFromText('POINT(-109 42)', 4269), geom);
But now I have a need to use polygons as input.
Any help would be great.
Thanks! Regards,Joseph Spenner
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