Hi,
I think ST_Intersects will meet your needs :
SELECT zone,gid,state,name,ST_Asgeojson( geom )
FROM polys
WHERE ST_Intersects(ST_GeomFromText('POLYGON((-109 42,-108 42, -108 43; -109
43, -109 42))', 4269), geom)
Hugues.
Hugues François
Tourisme et systèmes d’information
Irstea – DTM
+33 (0)4.76.76.27.44
+33 (0)6.77.66.21.31
De : [email protected]
[mailto:[email protected]] De la part de Joseph Spenner
Envoyé : mardi 18 novembre 2014 16:44
À : PostGIS Users Discussion
Objet : Re: [postgis-users] Returning polygons if any of a polygon input points
lie in the polygons
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
_______________________________________________
postgis-users mailing list
[email protected]
http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users
_______________________________________________
postgis-users mailing list
[email protected]
http://lists.osgeo.org/cgi-bin/mailman/listinfo/postgis-users
