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Date: Tue, 20 May 2014 20:10:05 +0200
From: lcelati@latitude-geosystems.com
To: python-list@python.org
Subject: Code a web service with python/postgis
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Xref: csiph.com comp.lang.python:71824

Dear all,

I would like code a web service with python. I have already imported =20
several vector data
(land cover) and one Digital Elevation Model (raster layer) into my =20
postgresql/postgis
database (server side).

I succeed in connecting to my pg db via psycopg2.

Client side, operators use a client application (Developed with PHP / =20
javascript /
openlayers).

Objectives :  Client side, once the layer would be selected,and once =20
the operators have
clicked on the map  , they would like that usefull informations appear =20
on the interface
of the client application(kind of land cover, z of the DEM).


=3D> Regarding my python script, i have to type a SQL query in order to =20
select usefull
informations of the db layers. And, of course, the information must  =20
depend on geographic
coordinates (Latitude Y/Longitute X).
In a 2nd time, my script must  produce a result(JSon type) for the =20
client side.


It would be possible to help me regarding the coding in order to =20
select usefull
informations of the db layers. (depends on geographic coordinates x/y  =20
? Could you throw
light for me regarding the way to do this SQL query ?

In advance, thank you to throw light for me.