Country and land check tool using DGGS (triangles)
For many years I've thought of trying to solve some common geographical problems with a simple data-included library, so it does not require GIS knowledge, code or good data (which "normal developers" often dont have). Now I got finally some time (and proper coding tech) to implement and show something, it answers to primitive (but not that trivial to answer) questions: is a point on land, and which country it is? There are also polyline variants (as in given picture - gives % of given route in different countries). To optimize the data compression and calculation a special triangular grid T3grid DGGS is used.
For sure everyone here can do same easily with any GIS or GIS libraries, but this one is easier to use (just include one lib), no need to worry about data sourcing and it also works order of magnitude faster than some common GIS alternatives I tried. Benchmarks and interactive demos are included.
It is MIT license open source: trifold
Questions: maybe something like that already exists? Would you need it? Any adjacent use cases: maybe fast polyline matching, "find nearby", location anonymization? Frankly many of them are probably somewhat better with different grids, triangle is interesting but has its problems too.