[GRASS-user] Inverse PCA in GRASS

[Andreas Philipp]

Am Donnerstag, den 24.01.2008, 17:23 -0800 schrieb Dylan Beaudette:
> On Thursday 24 January 2008, Brad Douglas wrote:
> > On Thu, 2008-01-24 at 14:58 -0800, Dylan Beaudette wrote:
> > > On Thursday 24 January 2008, Markus Neteler wrote:
> > > > On Jan 24, 2008 7:25 PM, Dylan Beaudette <dylan.beaudette at gmail.com> 
> wrote:
> > > > > On Thursday 24 January 2008, Markus Neteler wrote:
> > > > > > I have added m.eigensystem to GRASS Addons SVN with a slightly
> > > > > > updated Makefile. Grab here:
> > > > > > http://trac.osgeo.org/grass/browser/grass-addons/m.eigensystem
> > > > > >
> > > > > > or from SVN
> > > > > > http://trac.osgeo.org/grass/wiki/DownloadSource
> > > > > > -> Subversion GRASS Addons source code repository
> > > > > >
> > > > > > Markus
> > > > >
> > > > > Nice. Is this scheduled to be included as a standard module, or is
> > > > > that pending some user tests?
> > > >
> > > > I could still reproduce the manual page examples :)
> > > >
> > > > The question is if we want to introduce Fortran code again in the
> > > > main repository.
> > > >
> > > > Markus
> > >
> > > Good that the examples still work. Is there a general feeling toward
> > > _not_ introducing Fortran code back into the dev branch?
> >
> > +1.  More trouble that it's worth.  Please add C port to the TODO list.
> 
> Hmm.. 
> 
> While I agree in principle that having code from more than 1 lang can be a 
> pain to manage, I do like the approach used in R where numerous langs are 
> supported. 

Just a comment, I have in my mind for years now:
introducing FORTRAN again would be great benefit to GRASS (really never
understood why it was excluded), since fortran90 is a very common (and
easy) language in geo sciences! Some things are really a pain in c.
gfortran is available and is perfectly working together with gcc (other
compiler collections also have a fortran compiler working together with
c). Especially the modular architecture of GRASS should it make possible
to avoid compiling problems, isn't it?

Andreas

> 
> Since I cannot do the re-write, and the functionality seems worth the effort I 
> would vote 0 . 
> 
> Getting someone familiar with what the Fortran code is actually doing would be 
> important if we considered re-writing it...
> 
> Dylan
> 
> 
>