[Freegis-list] Free GIS for realtime data and 3D visualization?

[Markus Müller]

Hi Peter,

Peter Fischer schrieb:
> Hello Markus (Müller), hello Markus (Neteler)
>
> thank you for your hint. I'm a little confused because I thought
> WMS/WFS/WCS already support 3D data? But that seems not to be the case
> as far as I have read in the Web (Wikipedia, google). Therefore are
> the Web Terrain Service (WTS, static data only without time domain)
> and the Web 3D Service (W3DS, server delivers 3D scene graph and the
> client can combine the data from various sources). The question is:
> are there already open source implementations for W3DS? I would need
> the time domain for my realtime GPS data source. The clients (viewers)
> would then overlay them over the terrain data.
WFS and WCS can serve 3D data, if the implementation allows it. For WFS 
you would need support for an application schema able to handle 3D data 
e.g. CityGML (deegree supports this). WTS and W3DS on the other hand are 
visualisation services.
>
> Yes, deegree also seems to be an option when the 3D functions are
> ready. What viewers are available for that (client side)? Could I
> combine it with the GRASS viewer? Is W3DS support planned for deegree?
> (The standard seems to be not yet adopted by the OGC?)
It is not yet clear if W3DS will become an OGC standard and there are 
not current plans for supporting it. deegree so far implements WTS, 
allowing us to build thin clients (HTML/javascript) without any plug-ins.
>
> When not over a full blown 3D terrain, is it possible to overlay the
> realtime data over a 2D map in your current implementations (this
> maybe would also be sufficient for my purposes)?
I can only reply to this in regard to deegree. And I do not understand 
the question fully, but I am afraid the answer is "no" ;-)
So far deegree does not support anythin dynamic in regard to visualisation.
>
> Its interesting to discuss with you, I think I am near to the core of
> my recherche task.
>
> Thank you so far, I hope you like to answer the questions above?
I hope my answers help you a bit.


regards,

Markus
>
> Best regards,
>
> Peter.
>
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-- 
Dr. Markus Müller
l a t / l o n  GmbH (Hamburg)
Gluckstr. 53a			22081 Hamburg, Germany
phone ++49 +177 2470742		fax ++49 +228 18496-29
http://www.lat-lon.de		http://www.deegree.org
--