Re: [gdal-dev] Simple features/sql-mm and bezier/elliptical curves

2021-10-14 Thread Komяpa
https://www.iso.org/standard/60343.html ISO/IEC 13249-3:2016 Information technology — Database languages — SQL multimedia and application packages — Part 3: Spatial PDF costs 198 CHF (215 USD), and I don't know how DRM'd it is. The checkout form has weird things like "number of copies" for PDF. I

Re: [gdal-dev] Simple features/sql-mm and bezier/elliptical curves

2021-10-12 Thread Paul Ramsey
This would be something we could put our (PostGIS) OSGeo budget to, perhaps, in lieu of any other activities going on this year. P > On Oct 12, 2021, at 3:00 AM, Darafei Komяpa Praliaskouski > wrote: > > Hello, > > ISO SQL/MM has chapters for NURBS and other magical geometry types. The text

Re: [gdal-dev] Simple features/sql-mm and bezier/elliptical curves

2021-10-12 Thread Komяpa
Hello, ISO SQL/MM has chapters for NURBS and other magical geometry types. The text is unfortunately not free - I'd love us to have a copy for the PostGIS team at least. Last time I was touching that topic was around 2019 when I wanted to make TINs somewhat more compatible. OGC has a very limited

Re: [gdal-dev] Simple features/sql-mm and bezier/elliptical curves

2021-10-12 Thread Even Rouault
Hi Nyall, From what I'm aware of that is closely related: - The OGC Simple Features spec has a ongoing revision in https://www.ogc.org/standards/requests/238?utm_source=phplist820&utm_medium=email&utm_content=HTML&utm_campaign=OGC+seeks+public+comment+on+draft+Simple+Features+2021+standard , b

[gdal-dev] Simple features/sql-mm and bezier/elliptical curves

2021-10-11 Thread Nyall Dawson
Hi list, Slightly off-topic question (but I figure the people who would know would be subscribed to this list): Is anyone aware if there's been **any** talk/movement toward formally introducing bezier and/or elliptical curve support into the SF/SQL/MM specifications? Has anyone come across any in