Licenses used by elevation datasets.
There are some key datasets without which gpxz wouldn’t work. Furthermore, gpxz won’t be a success if it common for elevation datasets to come with a license that’s incompatible with my usecase.
- For a dataset to be used in gpxz it must have a license that allows for modification and redistribution.
- Attribution is no problem, as I plan to attribute all datasets anyway.
- Commercial use is probably needed: although the dataset will be open and freely downloadable, I would like to offer a paid option too. I’m not sure the legal status of charging for access (but not the dataset) so a commercial use allowance would be idea.
In a quick look I couldn’t find any license or terms for the US products like SRTM or National Elevation Dataset. I’ll keep looking but it seems they come with no usage restrictions.
The main dataset I could find with commercial restrictions is the CIGAR void-filled version of SRTM.
So it doesn’t look like I’ll have many issues finding appropriate datasets to use.