[OpenLayers-Users] question about select feature

[Eric Lemoine]

On Tuesday, February 23, 2010, Karina Guardado <kguardado at gmail.com> wrote:
> Hello everybody,
>
> I have 2 layers that are point type and I want users to be able to click on one point (of any layer) and get the information(attributes) related to that point. Here is my code
>
>  var estaciones = new OpenLayers.Layer.WMS("estaciones",
> "http://myurl/cgi-bin/mapserv?MAP=/var/www/amss_wms2.map",
>                 {layers:'estaciones', transparent: "true",format:"image/gif"});
>
>     var puntos = new OpenLayers.Layer.WMS("puntos",
>                 "http://myurl/cgi-bin/mapserv?MAP=/var/www/amss_wms2.mapl",
>                 {layers:'puntos', transparent: "true",format:"image/gif"});
>
> so far what I was using was a text layer to generate a marker and then get the information  as follows:
>
> var  infpuntos = new OpenLayers.Layer.Text( "infpuntos", {location: "textpunto.php"},
>                        "http://myurl/cgi-bin/mapserv?MAP=/var/www/amss_wms2.map");
>
> var  infestaciones = new OpenLayers.Layer.Text( "infestaciones", {location: "textpunto.php"},    "http://myurl/cgi-bin/mapserv?MAP=/var/www/amss_wms2.map");
>
> but I would like that users could be able to click on one point and get the information without using this text markers. I found information about  vector and gml layers with text format but I would like to know how to use them to work with more than one layer  or if there are other solutions that someone could recomend.

Hi. Have you considered using the WMSGetFeatureInfo control? You can
check out the getfeatureinfo-control example
<http://trac.openlayers.org/browser/trunk/openlayers/examples/getfeatureinfo-control.html>.

Cheers,


-- 
Eric Lemoine

Camptocamp France SAS
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