[OpenLayers-Users] Going nuts: getDataExtent

[Vivien Deparday]

Did you have a look at this: 
http://wiki.openstreetmap.org/wiki/Openlayers_Track_example

Cheers,

Vivien


Jan Martin wrote:
> Hi Arndt,
>
> OK, I should have told that the code is borrowed from
> http://oms.wff.ch/ol_track.htm and http://nuug.no/kart.shtml
>
> So I cleaned up the file and also got rid of GPX.js as well as Ajax.js.
> Still doesn't work. No zoom, not even a track anymore.
> Firebug reports: bounds is null
>
> Check it out:
> http://mybestprojects.com/data/test3/tracks_layers.html
>
> Thanks,
> Jan
>
> On Mon, Jun 8, 2009 at 9:21 PM, Arnd Wippermann 
> <arnd.wippermann at web.de <mailto:arnd.wippermann at web.de>> wrote:
>
>     Hi Jan,
>      
>     It seems, that your code GPX.js (OpenLayers.Layer.GPX) miss
>     something like
>      
>             this.events.triggerEvent("loadend");
>     you should have mentioned, that you use own code for
>     OpenLayers.Layer.GPX.
>      
>     Arnd
>      
>     ------------------------------------------------------------------------
>     *Von:* users-bounces at openlayers.org
>     <mailto:users-bounces at openlayers.org>
>     [mailto:users-bounces at openlayers.org
>     <mailto:users-bounces at openlayers.org>] *Im Auftrag von *Jan Martin
>     *Gesendet:* Montag, 8. Juni 2009 19:15
>     *An:* Vivien Deparday
>     *Cc:* users at openlayers.org <mailto:users at openlayers.org>
>     *Betreff:* Re: [OpenLayers-Users] Going nuts: getDataExtent
>
>     Hi Vivien,
>     hi all,
>
>     unfortunately it did not work.
>
>     Changed file here:
>     http://mybestprojects.com/data/test2/tracks_layers.html
>
>     I also would prefer the "try to register the same function but
>     before adding the layer" method, and NOT "within the constructor".
>
>     Thanks,
>     Jan
>
>     On Mon, Jun 8, 2009 at 5:47 PM, Vivien Deparday
>     <vivien.deparday at gmail.com <mailto:vivien.deparday at gmail.com>> wrote:
>
>         I think it's because you register your function on the event
>         loadend but the layer is already added and the event loadend
>         has already been fired. So, try to register the same function
>         but before adding the layer. You can even do it within the
>         constructor with the option eventListeners. I guess it would
>         look like something like this but I'm not sure as I never used
>         the gpx format.
>
>         var lgpx = new OpenLayers.Layer.GPX("20090606175533.gpx",
>         "separated/20090606175533.gpx", "#FF0000",{eventListeners:
>         {'loadend': function(){this.zoomToExtent(lgpx.getDataExtent())
>         }}});
>
>         Let me know if it helps.
>
>         Vivien Deparday
>
>         Jan Martin wrote:
>
>             Hi all,
>
>             I am going nuts over not beeing able to figure out how to
>             make getDataExtent work for me.
>
>             This is my page NOT working yet:
>             http://mybestprojects.com/data/test/tracks_layers.html
>
>             I try to model after
>             http://oms.wff.ch/ol_track.htm (tracks work fine, just
>             zoom in on the red point manually.)
>             and
>             http://nuug.no/kart.shtml (automatic zoom by getDataExtent
>             not working for me.)
>
>             Code in question might be:
>                    if( ! map.getCenter() ){
>                       lgpx.events.register('loadend', map,
>             function(){this.zoomToExtent(lgpx.getDataExtent())});
>                        map.setCenter(null, null);
>
>
>                    }
>              or check out whole page source at
>             http://mybestprojects.com/data/test/tracks_layers.html
>
>             What's wrong?
>
>             Thanks,
>             Jan
>
>
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>
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