[OpenLayers-Users] Make vector layer from JSON

[Hugo]

Thanks a lot for all the inputs you have given.
In fact with GeoJSON everything goes smoothly.

Cheers,
Hugo

On Mon, Mar 8, 2010 at 7:20 PM, Eric Lemoine <eric.lemoine at camptocamp.com>wrote:

> On Saturday, March 6, 2010, Hugo <hfpmartins at gmail.com> wrote:
> > Hello all,
> >
> > I'm trying to create a vector layer based on a php query (which includes
> the_geom) encoded in JSON. Until the moment i haven't been able to achieve
> this.
> > Following, is the relevant part of the code:
> >
> > var connect = new Ext.data.Connection();
> > connect.request({
> >     url: 'mfbase/geoquery.php',
> >     params: {
> >         species: species,
> >         datai: datai,
> >         dataf: dataf
> >     },
> >     success: function(response){
> >         var resp = response.responseText;
> >         var json = new OpenLayers.Format.JSON();
> >         var data = json.read(resp);
> >         //console.log(data[0].the_geom);
> >
> >         var querylayer1 = new OpenLayers.Layer.Vector(
> >             'Query1',
> >             {
> >                 isBaseLayer: false,
> >                 projection: wgs,
> >                 geometryName: 'the_geom',
> >             }
> >         );
> >
> >         querylayer1.addFeatures(data);
>
> addFeatures should receive an array of OpenLayers.Feature.Vector objects.
>
> How are geometries encoded in your JSON responses? If they are encoded
> as WKT you will also need OpenLayers.Format.WKT.
>
> Have you considered using GeoJSON? Using GeoJSON your client code will
> be simpler.
>
> Cheers,
>
> >         map.addLayer(querylayer1);
> >     }
> > })
> > Any suggestions are more than welcomed :)
> > Thanks to you all!
> >
> > Cheers,
> >
> >
> > --
> > Hugo Martins
> > FMV-UTL
> > CIISA-Epidemiologia e Saúde Pública Veterinária
> > Av. da Universidade Técnica
> > 1300-477 Lisboa
> > N 38°42'49.54", W 9°11'43.42"
> >
>
> --
> Eric Lemoine
>
> Camptocamp France SAS
> Savoie Technolac, BP 352
> 73377 Le Bourget du Lac, Cedex
>
> Tel : 00 33 4 79 44 44 96
> Mail : eric.lemoine at camptocamp.com
> http://www.camptocamp.com
>



-- 
Hugo Martins
FMV-UTL
CIISA-Epidemiologia e Saúde Pública Veterinária
Av. da Universidade Técnica
1300-477 Lisboa
N 38°42'49.54", W 9°11'43.42"
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