Grazie. Molto interessante davvero. Se va in porto apre scenari importanti per l'interoperabilità. Il 01/apr/2015 17:48 "Luca Delucchi" <lucadel...@gmail.com> ha scritto:
> Per chi non legge la mailing list gdal-dev una buona notizia per il > futuro... > > > ---------- Forwarded message ---------- > From: Even Rouault <even.roua...@spatialys.com> > Date: 1 April 2015 at 14:16 > Subject: [gdal-dev] UFO format / GDAL 3.0 > To: gdal-...@lists.osgeo.org > > > Hi, > > Since some time a few ideas came to my mind and I felt today was a good > one to > share them and get feedback. > Considering the never ending proliferation of GIS file formats, currently > 220 > handled in GDAL trunk, it seems wise to put an end to it. Especially since > the > counter used to iterate over the drivers is a unsigned 8 bit, so we will > soon > be unable to add more, or at the expense of sacrificing our ports to Intel > 8008 > or Motorola 6800, which would be pretty sad. > > Therefore I'd like to propose the UFO format, which stands for Universal > Format Oh-yeaaah! > The basic idea of UFO is that it isn't a fixed format, but a varying and > self- > described one. XML (or perhaps EXI?) + XSD + XSLT + XPath + Schematron > could > probably do it, but for efficiency I thought to a byte-code interpreted by > libgdal and whose interface with libgdal would match the GDAL driver > interface. So basically each dataset would contain its own driver. The big > plus is that you could write image translators that would generate binary > encodings optimized for the particular dataset being encoded: for example, > it > is kind of stupid to write the values of each pixel of a Mandelbrot fractal > whereas its mathematical description fits into a few lines of code. > Furthermore, still pursuing with that example, we could even have raster of > arbitrary resolution, since that's a characteristics of fractals. And many > GIS > datasets have indeed fractal charasterics, such as coastlines ( > http://en.wikipedia.org/wiki/Coastline_paradox ) > For security reason, we should aim at supporting only simple & verifiable > languages, so Brainfuck (Brainf**k for the most puritans of us) seems to > be a > good fit : http://en.wikipedia.org/wiki/Brainfuck. Basically it is a > Turing > complete language with only 8 commands. So as much powerful as needed, > while > being very easy to learn and implement. To save some efforts, I'd humbly > suggest we adopt libbf ( http://savannah.nongnu.org/projects/libbf ), an > older > project of mine that also incorporates a on-the-fly optimizer & compiler > for > most popular architectures. > > The plan would be to have an initial version of the UFO driver ready for > GDAL > 2.0 and push strongly for its widespread adoption in all GIS, remote > sensing, > OSS & proprietary vendors, etc.... Perhaps we should establish a dedicated > workgroup at OGC to make it a standard ? Then we could deprecate and remove > all existing drivers and at the time of GDAL 3.0, UFO would be the only one > remaining driver, making the Intel 8008 port very happy! > > Happy to hear from your thoughts before formalizing that as a RFC, > > Even > > -- > Spatialys - Geospatial professional services > http://www.spatialys.com > _______________________________________________ > gdal-dev mailing list > gdal-...@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/gdal-dev > > > -- > ciao > Luca > > http://gis.cri.fmach.it/delucchi/ > www.lucadelu.org > _______________________________________________ > Gfoss@lists.gfoss.it > http://lists.gfoss.it/cgi-bin/mailman/listinfo/gfoss > Questa e' una lista di discussione pubblica aperta a tutti. > I messaggi di questa lista non hanno relazione diretta con le posizioni > dell'Associazione GFOSS.it. > 750 iscritti al 18.3.2015
_______________________________________________ Gfoss@lists.gfoss.it http://lists.gfoss.it/cgi-bin/mailman/listinfo/gfoss Questa e' una lista di discussione pubblica aperta a tutti. I messaggi di questa lista non hanno relazione diretta con le posizioni dell'Associazione GFOSS.it. 750 iscritti al 18.3.2015
