[OpenLayers-Users] Vector layer with dinamic data

[Adrian Popa]

Hello Andreas,

Thank you very much - that did the trick! :)

Andreas Hocevar wrote:
> Adrian Popa wrote:
>   
>> Hello,
>>
>> I'm trying to accomplish the same thing and I followed your advice -
>> using vector + BBOX, but I hit a snag - because my POI layer has a lot
>> of elements, I would like to enable this layer only for a certain zoom
>> level (when the user is really close). Is there some standard
>> functionality for a layer - making it visible (and doing the queries)
>> only from a zoom level onwards?
>>     
>
> That would be layer.minResolution and layer.maxResolution.
>
> Regards,
> Andreas.
>   
>> If I try to fix things server-side (not returning anything if the zoom
>> is to low), openlayers will not query again because the zoomed BBOX is
>> included in the original BBOX and it thinks nothing changed...
>>
>> Thanks,
>> Adrian
>>
>> Andreas Hocevar wrote:
>>     
>>> Hi,
>>>
>>> this answer Eric gave to a similar thread in January should get you there:
>>> http://openlayers.org/pipermail/users/2009-January/009709.html
>>>
>>> Regards,
>>> Andreas.
>>>
>>> On Mon, Jun 29, 2009 at 8:42 AM, Alexandru
>>> IOVANOVICI<iovanalex at gmail.com> wrote:
>>>   
>>>       
>>>> Hello,
>>>>
>>>> I'm working on a application in wich i have some vector data (a kml file
>>>> with paths) wich i have to display over a map. I have the data in a database
>>>> and i can create the kml on-the-fly with a php script, based on some url GET
>>>> params. I want the create a kml file wich contains only the lines wich are
>>>> in the current viewport and at a level of detail depending on the zoom
>>>> level. So, when the user pans the map i shoud update the kml file and
>>>> display the new data. Same thing when the user zooms the map. My PHP script
>>>> and kml file are tested and working ok.
>>>> The problem is how do i code the javascript for this layer. For a similar
>>>> POI layer i used the instructions from here
>>>> http://wiki.openstreetmap.org/wiki/OpenLayers_Dynamic_POI and it is ok. But
>>>> in this case i have no getUrl arg to the constructor.
>>>> How can be done this ... because i'm sure there is a solution ...
>>>>
>>>> Thank you,
>>>>
>>>> Alexandru IOVANOVICI
>>>>
>>>> _______________________________________________
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>>>>
>>>>
>>>>     
>>>>         
>>>
>>>   
>>>       
>
>
>   


-- 
--- 
Adrian Popa
NOC Division
Network Engineer
Divizia Centrul National de Operare Retea
Departament Transport IP & Metro
Compartiment IP Core & Backbone
Phone: +40 21 400 3099

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