sisco55 0 Posted February 19, 2007 Where do I find dem files? Also what program do I need to edit them? Share this post Link to post Share on other sites
fasad 1 Posted February 19, 2007 Many countries have a government body which will freely give away low resolution data, such as the USGS. You will have to pay for high resolution data (~10m). I have used two programs to get the data into Visitor - Wilbur and bmp2ascii2ase. I'm sure there is a more efficient way. Share this post Link to post Share on other sites
Linker Split 0 Posted February 20, 2007 I need the DEM of SOmalia!!!! Mogadishu... plz help me finding one!!!! I'm looking for it since 3 months, without luck!!!! plz... Share this post Link to post Share on other sites
fasad 1 Posted February 20, 2007 http://srtm.csi.cgiar.org/SELECTION/inputCoord.asp 90m srtm data for the entire world ftp://e0srp01u.ecs.nasa.gov/srtm FTP service for SRTM data. Share this post Link to post Share on other sites
sisco55 0 Posted February 23, 2007 Does anyone know how I can get a dem file of a specific mountain? Specifically this one: http://www.summitpost.org/mountai....apter_3 Share this post Link to post Share on other sites
smiley nick 51 Posted February 23, 2007 You would first need to get a dem of the area. www.mapmart.com Then you would have to edit the dem in wilbur , if you where only after the mountain. Make sure your dem is a factor of "two" 256x256, 512x512 ect Then save it as a "lon, lat" in wilbur. Open WRP Tool, new, enter your island size. File, new, "import wilbur", load the lonlat.txt document And hey presto Nick Share this post Link to post Share on other sites
sisco55 0 Posted February 24, 2007 Hmmm, it saves it as lots of little ddf files. Share this post Link to post Share on other sites
Planck 1 Posted February 24, 2007 No no, this is in the United States, you can get a 30 metre DEM for nothing. http://data.geocomm.com/catalog/US/61086/sublist.html Planck Share this post Link to post Share on other sites
sisco55 0 Posted February 24, 2007 still saves it as lots of little ddf files. Share this post Link to post Share on other sites
Planck 1 Posted February 24, 2007 No it doesn't. I don't live in the US so I have no idea of the exact location of this mountain......tell me which county and I will try and extract the dem for you. Planck Share this post Link to post Share on other sites
sisco55 0 Posted February 24, 2007 Ah, I used a program to fix it. Thanks alot for all the help. Share this post Link to post Share on other sites
garryslv 0 Posted June 21, 2007 Excuse my nwebie-ness but whats the diff between 30 to 90 DEM Share this post Link to post Share on other sites
Overlord 0 Posted November 16, 2007 Maybe a little late for a reply but the diff between 30m and 90m dem data is the distance between each "height-measure" point. I hope someone watch this topic, I'm struggling myself ( Share this post Link to post Share on other sites
