http://opentopo.sdsc.edu/jforum-2.1.7-b3/posts/list/17.page JForum - http://www.jforum.net DEM: Downloading and Analyzing via ESRI's ArcLessons "This 20-page step-by-step lesson walks a user through downloading a Digital Elevation Model from the USGS seamless data server, formatting it, projecting it, and using it within a 2-D ArcMap session and a 3-D session using 3-D Analyst. In addition, National Land Cover Data (NLCD), Digital Orthophotoquads (DOQ), and Digital Raster Graphic (DRG) data are also downloaded and used. Derivative products are created from the data, including contour lines, slope, aspect, hillshade, and TIN." 2. Digital Elevation Data via OpenTopography team member Ramon Arrowsmith's Computers in Earth and Space Exploration course at ASU. "- How to acquire NED, SRTM and Orthoimagery data from the USGS website - How to get them into ARCGIS and change the projection (e.g. to UTM) - How to produce a hillshade map - How to produce a simple (but nice!) map in ARCGIS" 3. Digital Elevation Data II via OpenTopography team member Ramon Arrowsmith's Computers in Earth and Space Exploration course at ASU. - How to use ArcScene to make a DOQQ three-dimensional ]]> http://opentopo.sdsc.edu/jforum-2.1.7-b3/posts/list/34.page#71 http://opentopo.sdsc.edu/jforum-2.1.7-b3/posts/list/34.page#71 GMT