Julian, No worries I appreciate that you quoted me as it is an opportunity to advance the discussion. Will let you know if the DGGS working group members respond to your question: "SQL database that has added DGGS functions”?
Thanks for the kind words. It was a pleasure to organize the track. Lets see if there is continuing interest in the geospatial as a cross-project topic. George > On Sep 28, 2018, at 5:04 PM, Julian Hyde <[email protected]> wrote: > > 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 >>> >>> >> >
