Path: utzoo!attcan!uunet!cs.utexas.edu!tut.cis.ohio-state.edu!ucbvax!agate!shelby!Portia!hanauma!rick From: rick@hanauma (Richard Ottolini) Newsgroups: comp.graphics Subject: Re: GIS systems Message-ID: <2196@Portia.Stanford.EDU> Date: 11 May 89 15:29:40 GMT Sender: USENET News System Reply-To: rick@hanauma (Richard Ottolini) Organization: Stanford University, Dept. of Geophysics Lines: 8 It was my impression that most of the ten terrabytes of the USGS database would be consumed by the topographic contour lines rather than the cultural overlays. Ten gigabytes for each of the dozen or so overlays sounds consistant. Just wait until airplane or satellite image data is incorporated as the USGS plans to do and military mapping agencies are already attempting! 3000 EW km x 10 pixels / km x 1500 NS km x 10 x 10 spectral bands x 1 byte / band equals 450 GB.