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

[Peter Fischer]

Hi Brent,
 
 thank you very much for your answer, it was very helpful. One question:
 the NVIZ component, could I use that isolated from the rest of GRASS GIS, i.e.
 without all the other components to keep my system small and fast?
 Yet another question: Do you know whether there is a fast, thin client for
 accessing Web Map Services (WMS) which does caching when getting raster
 data (so that e.g. when I shift the current field of view, the client not always has to
 reload new data from the server)? Whether 3D or only 2D plays no role, optional
 3D would be nice, however.
 And one last question: When I get realtime data from a server, e.g. GPS data of
 some object, is it possible to overlay that data over a map with a WMS
 without storing the data in a database (which, I think would slow down the
 realtime process because of the hard disk access)? Speed is an issue in my
 scenario.
 
 You would greatly help me since I am a newbie in this area, so be thanked in
 advance for any help.
 
 Best regards, Peter.
 
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