Looking for LARGE DEM datasets
polycounter lvl 15
I know some of you work with geospacial datasets and maybe have some info. For the past couple years I've been working with a friend processing this data and looking for datasets that are HUGE. Huge does not have to be in scale, but resolution, I am looking for anything complete in the 1foot~10cm range (anything slightly lower is res is fine) and 300GB~1TB worth if possible. Just post a link only if it's free. Any country, any time period, just high res data.
USGS site is horrible, everything is on tape and has to be retrieved, and then if you loose your place, the link/filename changes making it near impossible to get good data over a few days. Last time it took us about a week to download half of Colorado because of this issue.
USGS site is horrible, everything is on tape and has to be retrieved, and then if you loose your place, the link/filename changes making it near impossible to get good data over a few days. Last time it took us about a week to download half of Colorado because of this issue.
Replies
USGS is your best bet, otherwise you have to go through very expensive pay sites.
Another way is extract it from "Google earth"
http://utforums.epicgames.com/showthread.php?t=607176
All the above ends being really hard to use for game environments. It's just messy and frustrating. Plus the resolution is not high enough. Even LIDAR (the best resolution they have) is too small. Also getting LIDAR to a usable format is hard.
The best I have found is "World Machine." It makes a depth map and Diffuse map with very detailed erosion. Even better you input a very basic depth map from photo-shop or from a BASE MODEL of your environment.
http://www.world-machine.com/gallery.html
Good luck
http://seamless.usgs.gov/index.php
about making data from scratch-- World Machine is good, but I think GeoControl is better (once you get past the UI).
[edit]
Oops, sorry-- didn't see the bit about the USGS site