Modelling on exact GPS-coordinates

[KVDP]

Being intrested in modelling on exact GPS-coordinates, the window-->model info-->location isn't enough. This as I'm particularly intrested in landscape modelling, thus modelling on large surfaces (thus very large margin of error; ideally I would like to work correct upto 1 m). I was thinking of thus either:

• using the above method + excel spreadsheets (for determining relative location) --> see http://www.google.com/support/forum/p/sketchup/thread?tid=7437d98c8fa487f5&hl=en I'm not sure how this needs to be done though + the margin of error seems quite large

• or by altering the kml textfile myself -->perhaps by swapping the <altitudemode> tag by another tag which is capable of supporting 4 GPS coordinates; ie LatLonQuad, ... Since this too is not sufficient, perhaps 2 modells can be determined, in the form of Model id="building" followed by the 4 coordinates, and Model id="soil" followed by the 4 coordinates. "Soil" would then be solely the soil surface (which can be flat or with gradience, ie by using the sandbox tools. "building" is offcourse the building, standing on the soil surface.

• or by using ruby's ?
  ie

• Cloud V6/V7.1 --> http://rhin.crai.archi.fr/rubylibrarydepot/plugin_details.php?id=72
• points_cloud_triangulation.rb
  --> http://forums.sketchucation.com/viewtopic.php?f=18&t=4276&sta
  --> http://markmail.org/message/swwwy5qayrvlqqzi
  Of the last method I also don't quite understand how to do it.

Any help ?

[Chris Fullmer]

Well, imnporting your terrain from Google Earth will automaticaly geo-locate your model. Then do you want to continue working in GSP type coordinates after that? Or what are you trying to get at? I'm a little confused by all the different options you posted. What do you need? A tool that lets you enter coordinates instead of lengths and distances?

Chris