[OpenLayers-Users] Re: DWITHIN Spatial Filter

[Tobias Reinicke]

Something else to experiment with is if the filter itself is taking a
long time. Take the fixed strategy out and also the filter and zoom in
and around and see what the performance is.. if it is still
problematic you can look into the following options:
 -- only show the data at higher zoom levels (i.e. closer to the
ground) - that way the bbox is smaller.
 --  think about using a clustering strategy. For this to work it
should really be done on the server, but you can experiment with it on
the client. (search the OL examples for cluster).
Toby

On 7 December 2011 08:09, Toby R <ramotswa at gmail.com> wrote:
> Yes, it means your requesting your features twice, one the whole
> dataset, and once for the bbox. Remove the fixed strategy.
> Toby
>
>
>
> On 7 Dec 2011, at 07:56, Shadin <w_ward_W at hotmail.com> wrote:
>
>> still don't know what to do.
>> the points take 1 min to appear over the map.
>>
>> /*Then you probably need to index the data and use a tile cache in front
>> of the WMS. */
>> would that help with this problem ?
>>
>>
>> I'm using 2 strategies with the vector layer
>> [new OpenLayers.Strategy.Fixed(),
>> new OpenLayers.Strategy.BBOX()]
>>
>> would that make any problem ?
>>
>>
>>
>>
>> /*If you are using geoserver, make sure that distance is in the units of
>> native projection.*/
>> how i can do that ?
>>
>>
>>
>> --
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>> Sent from the OpenLayers Users mailing list archive at Nabble.com.
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