Le mercredi 21 décembre 2011 21:01:22, Frank Warmerdam a écrit : > On Wed, Dec 21, 2011 at 11:41 AM, Yves Jacolin (free) <[email protected]> wrote: > > Hello, > > > > I have some question about writing pixel functions with vrt files. I have > > a netcdf file with two subset named U and V. > > > > How can I process sqrt(U^2 + V^2) using this feature with vrt file? > > > > * do I need to create a C file and build GDAL with it? > > Yves, > > Yes - registered in a particular way. I must confess to me > this makes custom pixel functions of modest value. > > > * do I need to create a C file and locate it close to vrt file? Thanks Franck. This seems indeed a little bit harder to use it but this exists at least!
Is it possible to improve this feature by linking a file dynamicly? I don't know anything about this so it is just for my curiosity. Thanks, Y. -- Yves Jacolin _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
