Even Rouault wrote: >On mardi 13 février 2018 02:06:47 CET jratike80 wrote: >> Even Rouault-2 wrote >> >> > On lundi 22 janvier 2018 23:40:55 CET Even Rouault wrote: >> >> Hi, >> >> >> >> > P.S. @Even: Any news on a GDAL/OGR MVT reader? >> >> >> >> Yes, a new OGR MVT reader has just been committed in GDAL trunk: >> >> http://gdal.org/drv_mvt.html >> > >> > And the writer part (for MVT and MBTILES) driver is now in trunk >> > >> > http://gdal.org/drv_mvt.html >> > http://gdal.org/frmt_mbtiles.html >> > >> > Even >> >> Hi, >> >> At the moment we create MVT tiles from PostGIS with ST_AsMVT to suit with >> the national gridset that is based on ETRS-TM35FIN (EPSG:3067) coordinate >> system. How difficult would you consider to enhance the driver to split and >> write vector tiles according to other gridsets than the Web Mercator one? >Not that much. But is there a standard way of deriving the tiling scheme for >that CRS ? I guess not. You'd probably need to manually define the >coordinate >of the left-corner of the tile (0,0) in the CRS and the resolution of the tile >at zoom level 0. There is actually a Finnish national recommendation about the EPSG:3067 tiling schema. The top-left corner of the zero tile is at -548576 E, 8388608 N, with resolution of 8192 meters.
http://docs.jhs-suositukset.fi/jhs-suositukset/JHS180_liite1/JHS180_liite1.html#H7 -Jukka- >Even -- Spatialys - Geospatial professional services http://www.spatialys.com _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/gdal-dev