Anybody know or use some DTM software that is either free, or has a free-but-restricted mode? Ideally that can import from Google maps, and then use our own heights and levels to create a 3d image? I am looking to be able to draw my yard etc in 3d to work out some big drains, conduits, tracks etc.
Or can this be done using Google Sketchup etc?
Or can this be done using Google Sketchup etc?