On Tue, Nov 25, 2008 at 12:05:43PM -0800, Michal Migurski wrote: > On Nov 25, 2008, at 8:34 AM, Peter S Galbraith wrote: > > > Yikes... Sorry Michal. I guess I dropped the ball on this one. > > As a note to myself, the FAQ > > > > http://trac.osgeo.org/proj/wiki/FAQ > > > > says: > > > > After downloading and unpacking the PROJ.4 source, also download and > > unpack the set of datum shift files. This would be a file like > > ftp://ftp.remotesensing.org/pub/proj/proj-datumgrid-1.4.zip. This > > file > > should be unpacked within the proj/nad directory. Then proceed with > > the > > configuration, build and install. This will ensure that the build > > system > > knows about the grid shift files, and applies the ascii to binary > > preprocessing step. > > > > Peter > > > Thank you! >
As said off list, I see a couple of problems: - Three files are binary blobs, two NTv2 and one (maybe?) NTv1. I'm not too sure that differences in endianess are considered, it needs some checks. - It would be better having a decent summary of data provenances of those information. I see many GIS people are not too interested in the license aspect of projection data (see the EPSG case) but Debian cares. Currently I wrote something like this: Debian Proj upstream source notes --------------------------------- The Debian Proj package comes with both proj4 upstream and additional datum grids (http://download.osgeo.org/proj/proj-datumgrid-1.4.zip at the time of this file) in a single package. A note about datum grids you can find in nad/ directory and datumshifts.shar archive is mandatory. All those data are public domain, taken and collected from various US/Canada, France and New Zealand public domain resources. Most of them are available in ASCII form, and some use a NTv2 binary format. The NTv2 format is a documented format used by some tools freely available by various sources: some of them are binary-only, other are available in source form. As references about data origins consider the following: Australia: http://www.icsm.gov.au/icsm/gda/gdatm/index.html France: http://www.stjohnspoint.co.uk/gis/france.htm Canada: http://www.geod.nrcan.gc.ca/tools-outils/ntv2_e.php Germany: http://crs.bkg.bund.de/crseu/crs/descrtrans/BeTA/de_dhdn2etrs_beta.php UK: http://lists.maptools.org/pipermail/proj/2006-November/002658.html New Zealand: http://www.linz.govt.nz/geodetic/software-downloads/index.aspx -- Francesco P. Lovergine _______________________________________________ Pkg-grass-devel mailing list Pkg-grass-devel@lists.alioth.debian.org http://lists.alioth.debian.org/mailman/listinfo/pkg-grass-devel