My comment was about Discrete Global Grid Systems in general and the role of the OGC standard.
OGC Discrete Global Grid Systems standard http://docs.opengeospatial.org/as/15-104r5/15-104r5.html From the OGC DGGS standard: "A DGGS is a spatial reference system that uses a hierarchical tessellation of cells to partition and address the globe. DGGS are characterized by the properties of their cell structure, geo-encoding, quantization strategy and associated mathematical functions.The OGC DGGS Abstract Specification supports the specification of standardized DGGS infrastructures that enable the integrated analysis of very large, multi-source, multi-resolution, multi-dimensional, distributed geospatial data. Interoperability between OGC DGGS implementations is anticipated through implementation standards, and extension interface encodings of OGC Web Services.” H3 is a good example of a DGGS. Uber presented H3 to the OGC DGGS Working group at the most recent OGC meeting earlier this month. There are other DGGSs: https://www.researchgate.net/publication/303093407_The_rHEALPix_Discrete_Global_Grid_System https://www.slideshare.net/ClintonDow/dggs-python-geopython-2017 https://vimeo.com/204787821 https://www.youtube.com/watch?v=xh5csOiRVsk https://www.unece.org/fileadmin/DAM/stats/documents/ece/ces/ge.58/2017/mtg3/S1_LEWIS_DGGS_pres_final.pdf Julian - I will ask around for an "SQL database that has added DGGS functions" George > On Sep 28, 2018, at 1:58 PM, Julian Hyde <[email protected]> wrote: > > There was a lot of talk about H3 during the geospatial track. “It will change > the world (or at least the way we represent it)” said George, IIRC. > > I presume these are the best resources for it: https://github.com/uber/h3 > <https://github.com/uber/h3> (code) and https://uber.github.io/h3/#/ > <https://uber.github.io/h3/#/> (documentation). > > Does anyone know of a SQL database that has added H3 functions? Also, is > there are pure Java implementation (not just bindings that talk to a C > back-end)? > > Aside: H3 is an awful name for a library when it comes to search. Worse than > “Go” and “C++”, if that was possible. > > Julian > >
