Ken, height layer values are always treated as meters. 100% Z-scale means 1m = 1m, the "actual" display height in 3D will depend on the geographic extents of the algorithm. eg, if the extents are 1000m X 1000m, a 1m height value would look pretty flat (~1 pixel).
regards -- Simon ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^ Simon Cope, : e-mail: [EMAIL PROTECTED] Chief Software Architect : WWW: http://www.ermapper.com : Int'l Phone: +61 8 9388 2900 Earth Resource Mapping Pty Ltd, : Int'l Fax: +61 8 9388 2901 Level 2, 87 Colin St, West Perth. : Australia Phone: (08) 9388 2900 Western Australia 6005 : Australia Fax: (08) 9388 2901 Q: 1.2TB (1,200GB) Image over the Internet? A: Image Web Server! http://www.earthetc.com > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]]On Behalf Of Ken Hickey > Sent: Thursday, 21 November 2002 7:35 AM > To: [EMAIL PROTECTED] > Subject: setting Z-scale > > > g'day > > Does anyone know how the Z-scale % values relate to actual > z-values in a height layer? I have a DEM that I am looking at in > 3D perspective view (height values in meters), I want to set > vertical exaggeration to 1, but I can't make sense of the z-scale > values. Visually, a x1 vertical exaggeration seems to correspond > to ~ 500% Z-scale > > cheers > Ken Hickey > > ------------------------------------------------------------------ > Kenneth Hickey > Mineral Deposit Research Unit (MDRU) > Department of Earth and Ocean Sciences > University of British Columbia > 6339 Stores Rd, Vancouver, BC V6T 1Z4, Canada > phone +1-604-822-3765; Fax +1-604-822-6088 > email: [EMAIL PROTECTED] > > ----------------------------------------------------------- To make changes to your subscription, please visit our website, http://www.ermapper.com/technicl/ermapperl/index.htm
