[OpenLayers-Users] Going nuts: getDataExtent

[Jan Martin]

Yes I did,

it's as frustrating as all the examples at
http://openlayers.org/dev/examples

All the lat, lon and zoom are always hardcoded. Not dynamic as I need it.
So not helpfull.

Please find a screenshot of what I did using shell and perl scripts I wrote
today and gpsbabel:

>From thousands of lines like this:
1244296533    1    8.664075    49.993945    172.012836

to this:
http://mybestprojects.com/data/test3/Skytraq-Venus_6-GPS_tracks.png

Nice eh?
Now how to make this zoom working?

Jan

On Mon, Jun 8, 2009 at 11:32 PM, Vivien Deparday
<vivien.deparday at gmail.com>wrote:

> 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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>>
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