Hi!
I am doing a quick R&D on geospatial data workflow inside Terragen and would welcome some tips/links to resources on what is the fastest way to acquire data. I have skimmed several tutorials on that for TGN, played with GIS websites, etc... I am a total newbie in that area, so sorry if my questions will seem naive. My questions are these:
1. MULTIPLE DEMS (selected region)
a) What is the most fuss-free approach to getting multiple seamless DEMs inside TGN (seamless.usgs.gov is unavailable).
b) I have played with
https://viewer.nationalmap.gov. I can download chosen heightfield data "products" for the rectangle I select. What about color data matching those heightfields? (same cropping of files)?
c) I have seen Global Mapper used for certain operations, like pulling data or mapping conversions. The best free alternative seems to be QGIS. Or am I wrong here?
2. FULL EARTH COVERAGE
a) should I pull Earth imagery from NASA or is there a better resource?
b) what is the most detailed resource for this task (free) ?
Thank you in advance!