How do I import SDTS to Terragen 2?
On this page: http://data.geocomm.com/dem/demdownload.html (http://data.geocomm.com/dem/demdownload.html) it says: Please Click on a State to access DEM data...
So I do, and download what i want but it's not DEM data. It's SDTS data. How do I use SDTS data in Terragen 2?
3DEM should load it OK.
You may also find it easier getting data directly from the USGS.
http://seamless.usgs.gov/website/seamless/viewer.htm (http://seamless.usgs.gov/website/seamless/viewer.htm)
Apart from being completely free you can download larger chunks of data in one file e.g. a 1° square of 10m data is delivered in 6 tiles, which beats downloading several smaller tiles from geocomm (and they charge for 10m downloads).
Thanks for that link bigben, but if I don't know where a specific place is..... how do I find it?
I'm not very good in geography ::)
Google the 'place name'+Longitude+Latitude.. ...
or start at the top left and work your way down ;)
But seriously.... google the place name to find it's coordinates, plug that into an online map and then use that map as a reference to finding it on the USGS site. You can set extra display options in the "Display" block on the right of the interface. I use these to display common border, roads and topography to find my way around.
- National Atlas Interstate Labels
- National Atlas and BTS Roads
- National Atlas States
- National Atlas Counties 2001
- GTOPO60 Color Shaded Relief
- or NED shaded relief (1 arc second)
- or NED shaded relief (1/3 arc second)
You can draw a rectangle to choose the area you want to view or download, or just find the coordinates of your feature and systematically get the surrounding data by plugging in numbers.