[OpenLayers-Users] Slow marker rendering in IE

[Ivan Grcic]

Hi,
just make vector layers of points and style them with externalGraphic,
 depending on ponit attribute!

cheers

On Wed, Dec 10, 2008 at 1:54 PM, Jani Patokallio <jpatokal at iki.fi> wrote:
> Greetings,
>
> Ivan Grcic wrote:
>> Hi, no matter what u do showing 1000features in IE will be sloooow!
>> I suggest to try using cluster strategy!
>>
> Any suggestions for a clustering algorithm that works on markers?
> OpenLayers.Strategy.Cluster seems to cover Vector features only.
>
> Cheers,
> -jani
>
>> On Tue, Dec 2, 2008 at 5:26 PM, Jani Patokallio <jpatokal at iki.fi> wrote:
>>
>>> Greetings,
>>>
>>> I have an OpenLayers-based site (http://openflights.org) that renders
>>> airport markers and flight vectors on a world map, and while it's
>>> reasonably snappy on Firefox, it's very slow on IE.  I've turned off the
>>> alpha hack, but this did not seem to make any difference at all.
>>>
>>> Searching through the archives, there was a mail (*) that suggested
>>> that, instead of using a separate mousedown event handler for each
>>> marker (which is what I'm doing right now), you should "replace it with
>>> an event handler on the container and then using the target property to
>>> determine if one of the smaller elements had been clicked".  If the
>>> container of a Marker is its Layer.Markers, how do I set an event
>>> handler on it and determine the target?
>>>
>>> * http://www.mail-archive.com/dev@openlayers.org/msg00084.html
>>>
>>> Also, ideas for how to speed up rendering at the world level, when there
>>> may be >1000 airports on the map, are welcome.  My current thinking is
>>> to load all markers into the layer, but listen to the map's zoom events
>>> and call marker.display(true/false) to toggle them on/off when zooming
>>> in/out.  There are no faster-rendering clickable alternatives to PNG
>>> icons, right?
>>>
>>> Cheers,
>>> -jani
>>>
>>> _______________________________________________
>>> Users mailing list
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>>> http://openlayers.org/mailman/listinfo/users
>>>
>>>
>>
>>
>>
>>
>
>



-- 
Ivan Grcic