On mardi 12 février 2019 10:24:50 CET Nyall Dawson wrote: > On Mon, 11 Feb 2019 at 23:33, Andrea Aime <andrea.a...@geo-solutions.it> wrote: > > I've tried to open a relatively small file, 20MB, 200k lines, works and > > displays fine, the in memory spatial index (from the docs, "By default, > > it will also build on the fly a in-memory spatial index during the first > > sequential read of a layer") seems to be effective. > > Just on this topic -- Even in your opinion, what's the likely that the > OpenFileGDB driver will ever gain support for existing spatial > indices? Is this functionality missing due to lack of funds/demands, > or because of difficulties in the reverse engineering?
There's clearly demand for it. I had been offered funding to complete the reverse engineerings, but I'm short of ideas and money doesn't always make people suddenly smarter :-) That said, I've the feeling that's this is doable. A spatial index entry is just 8 bytes... Probably just a matter of a new brain looking at the issue and having the appropriate intuition. My findings are in the "Partial specification of .spx files" section of https://github.com/rouault/dump_gdbtable/wiki/FGDB-Spec 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
