[OpenLayers-Users] GisCloud showing tons of vectors features on Web Browser

[christopher.schmidt at nokia.com]

On Sep 21, 2011, at 5:30 PM, ext Etides wrote:

> Hello,
>    I  have found today on the web a company named GISCloud  that claim to be able to show millions of vectors features in a Web Browser very fastly using html5 canvas. The demos on their web page seems to confirm what they claim…

I've used thousands of vectors in a *modern* browser without problems in OpenLayers.
Our canvas support is also reasonably good for things which are static (no
interaction), and we have some patches for doing fast feature interactions 
on canvas as well.

The problem, as always, is whether you need to support IE. If you do, Canvas means
going through extcanvas to VML -- and although OL may not be ideal, hundreds of VML
elements is the limit of that platform.

If you don't care about that -- use Renderer.Canvas, and have at you. OpenLayers
should scale reasonably well, and if it doesn't, it's likely that simple performance
improvements -- like support for some kind of more condensed format for passing around
feature data, simplifying object creation for feature objects, and the like -- can 
expose fairly large wins.

-- Chris 

>  
> 
> I use Openlayers for years and know that with more than a couple of hundreds vector features your map may become unresponsive and I’m not talking about i.e. that is almost useless with vectors…
> 
>  
> 
> Someone have an idea about what is the trick? Is it something that Openlayers may expect to offer?

> Vectors features are so cool in a Web page compare to images it could be nice to be able to use in an effective way 100% vectors for all our maps…
> 
>  
> 
> Thanks a lot
> 
>  
> 
> Etienne
> 
> 
> View this message in context: GisCloud showing tons of vectors features on Web Browser
> Sent from the OpenLayers Users mailing list archive at Nabble.com.
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