George, Thank you for clarifying - and sorry if I misquoted you.
It is definitely helpful to know that DGGS is a hot area, and that there are moves to standardize. And thank you, again, for organizing and chairing the track. I attended several of the sessions and felt a commonality of purpose among the various speakers. A good basis for a cross-project Geospatial community inside the ASF. Julian > On Sep 28, 2018, at 1:50 PM, George Percivall <[email protected]> > wrote: > > > 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 >> >> >
