[postgis-users] JSON

[Obe, Regina]

Sophie,
The 1.3.4 is well not actually released yet, but you can get it from the svn repository
By following the instructions here
http://postgis.refractions.net/download/  (on how to connect to the repository)
 
Then checkout the branches/1.3
 
I was hoping it would be a bit easier - to just download the postgis-svn.tar.gz (but looking at that - that looks like the 1.4 version which is kind of unstable at the moment I think).
 
HINT HINT to someone in dev group:  Maybe we should also output the 1.3 branch as a tar.gz?
 
After you have compiled etc, it outputs just the geojson part, so you'll need to glue the strings (forming your attribute) together with your favorite web language e.g. PHP, python, .NET, Perl, whatever
 
and then you could use OpenLayers which has a driver for GeoJSON format as described
 
here:  http://dev.openlayers.org/docs/files/OpenLayers/Format/GeoJSON-js.html
 
and example here (actually this one you can cut and paste an individual GeoJSON output geometry to see how it looks - take for example Paul's example below - get rid of the line breaks and paste in)
http://dev.openlayers.org/sandbox/tschaub/feature/examples/geojson.html
 
Hope that helps,
Regina
 

________________________________

From: postgis-users-bounces at postgis.refractions.net [mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of Sophie GRAS
Sent: Friday, August 01, 2008 6:20 AM
To: PostGIS Users Discussion
Subject: Re: [postgis-users] JSON


Hi everybody,
i want to use the asgeojson function.
Do you know where we can find the 1.3.4 version of postgis ?
once you have your data in the "geojson format", how do you "call" it in the json file ?
Thanks for your help

Sophie

----- Mail Original -----
De: "Paragon Corporation" <lr at pcorp.us>
À: "PostGIS Users Discussion" <postgis-users at postgis.refractions.net>
Envoyé: Jeudi 31 Juillet 2008 07:16:24 GMT +01:00 Amsterdam / Berlin / Berne / Rome / Stockholm / Vienne
Objet: RE: [postgis-users] JSON

We should update the docs to have an Availability section for the Geometry
Outputs.  Well at the very least for the ST_AsGeomJson.

It confused me too when  I tried to use that function and realized it was in
an unreleased version.
 

-----Original Message-----
From: postgis-users-bounces at postgis.refractions.net
[mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of Paul
Ramsey
Sent: Wednesday, July 30, 2008 7:29 PM
To: PostGIS Users Discussion
Subject: Re: [postgis-users] JSON

I think it's unreleased on the 1.3 branch. I have it here on my development
box.  So 1.3.4 would have it.

# select st_asgeojson(geom) from fe_edges limit 1;
                                                          st_asgeojson
----------------------------------------------------------------------------
----------------------------------------------------
 
{"type":"MultiLineString","coordinates":[[[-89.734634999999997,31.4920720000
00000],[-89.734955999999997,31.492237999999997]]]}
(1 row)


On Wed, Jul 30, 2008 at 4:16 PM, Jim <jbucher at cnrit.tamu.edu> wrote:
> I just installed 1.3.3 and I don't see an ST_AsGeoJson or an AsGeoJson 
> function.
>
> Paul Ramsey wrote:
>>
>> Jim,
>>
>> We've got that contribution already,
>>
>>
>> http://postgis.refractions.net/documentation/manual-1.3/ch06.html#id2
>> 975494
>>
>> Thanks though!
>>
>> Paul
>>
>
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