[GRASSLIST:6000] Re: moving layers from one machine to another

[Roger Bivand]

On Fri, 4 Mar 2005, Radim Blazek wrote:

> Binary files are portable and the library is tested during compilation 
> (it writes/reads both little an big endians for all data types and 
> compares with 'etalon').

Thanks, Radim, this is authoritative. 

Roger

> 
> Chris, could you try to convert head and dbln files from UNIX to Mac 
> (newline characters)?
> 
> Radim
> 
> 
> Chris Fonnesbeck wrote:
> > On Thu, 3 Mar 2005 20:59:45 +0100 (CET), Roger Bivand
> > <Roger.Bivand at nhh.no> wrote:
> > 
> >>On Thu, 3 Mar 2005, Chris Fonnesbeck wrote:
> >>
> >>
> >>>On Thu, 3 Mar 2005 19:47:17 +0100 (CET), Roger Bivand
> >>><Roger.Bivand at nhh.no> wrote:
> >>>
> >>>>On Thu, 3 Mar 2005, Chris Fonnesbeck wrote:
> >>>>
> >>>>
> >>>>>That makes sense. So, what is the recommended way, then, of moving
> >>>>>GRASS layers among platforms?
> >>>>
> >>>>I'm returning Chris' question to the list, so that the answer gets into
> >>>>the archives. Chris, could you state which GRASS version you are using on
> >>>>both platforms? I guess this is 5.7 or 6.0 - could somebody who knows the
> >>>>vector storage formats comment please?
> >>>>
> >>>
> >>>This is version 6, beta 2. I am using Lorenzo Moretti's OS X binary,
> >>>to be specific. The imported file is a vector shapefile.
> >>>
> >>
> >>PLEASE reply to the list too - it is polite to keep the list informed on a
> >>matter of some importance. You have not said what the GRASS version on
> >>which Linux was.
> >>
> >>The documentation is in the last resort in the 6.0.0 beta2 sources.
> >>lib/gis/Makefile has EXTRA_LIBS = $(XDRLIB) ..., but lib/vector/*/Makefile
> >>don't, as far as I can see. $(XDRLIB) is in: form/Makefile, gis/Makefile,
> >>init/Makefile, vector/diglib/Makefile: this final directory includes
> >>reference to a portable vector format. Neither "XDR" nor "portable" appear
> >>in the grass60vlib reference manual, but the portable functions seem to be
> >>called in Vector_read_nat() and elsewhere in Vlib.
> >>
> >>The release notes for 6.0.0 beta2 say "The new internal vector data format
> >>is portable between 32bit and 64bit platforms", and googling the GRASS
> >>site for portable and vector gives lots of hits, but no specific
> >>declaration that you can validly do what you want to do, or that you
> >>can't. A good deal of work seems to have gone into trying to provide
> >>endian portability, so maybe there is something else involved.
> >>
> > 
> > 
> > Sorry, I *meant* to hit "reply all" and this hit the list as well, but did not.
> > 
> > That may be the problem -- I imported the file in 5.7 and then tried
> > moving it over to 6.0. I will build 6.0 on my Linux box and try again.
> 
> 

-- 
Roger Bivand
Economic Geography Section, Department of Economics, Norwegian School of
Economics and Business Administration, Breiviksveien 40, N-5045 Bergen,
Norway. voice: +47 55 95 93 55; fax +47 55 95 93 93
e-mail: Roger.Bivand at nhh.no