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- Windows Version
- Windows 10 64-bit (64.0 GB RAM - Intel Xeon W-2133 CPU @ 3.60GHz)
- Global Mapper Version
My understanding is that Google Earth terrain is around 90m resolution (each pixel is 90m across). I have imported your TXT data and I can see 90m tiles. I couldn't get the LAS file to load in the right place but when I removed the header and first column from the TXT file with Excel it loaded fine. The quality is that good though.
There are various sources that cover most of the world. If you click on the globe icon in GM you can find SRTM (which is ~30m resolution) under **POPULAR SOURCES** > SRTM Worldwide Elevation Data (1-arc second..). Also there is the ASTER GDEM v2 in that list too.
Other sources can be found online here but note some country have their own DEM/LiDAR sources that are much better:
Our company would find a dedicated tool for this very useful in our offices across the world. For instance, placing a point and getting global mapper to fill within the 'basin' to a specific elevation. We perform a lot of analysis for Tailings Facilities so having the ability to model a dam and then compute the capacity behind it would be awesome.
On that subject, having the ability to create a dam from a Line Feature would also be amazing too. We would need to enter the crest width, crest elevation and upstream and downstream slope parameters.