[GRASSLIST:2233] Re: Projection questions
glynn.clements at virgin.net
Wed Aug 1 04:44:09 EDT 2001
Eric G. Miller wrote:
> > > The management of coordinate systems should've been reorganized when
> > > the proj4 library was added. Instead, we got this PROJECTION_OTHER
> > > thing. Anyway, all the infrastructure is present, it's just the
> > > organization of it that needs help.
> > Speaking of projections, can anyone suggest any online (or
> > downloadable) tutorials on the subject? I've read the stuff in chapter
> > 2 of the CAST GRASS tutorial, but I could do with something more
> > substantial.
> Some basic info is available at Geographer's Craft:
> _Geodesy for the Layman_:
> *** NIMA's website is fsck'ed, so that may not work ;(
> (if their website wasn't screwed up, you could also get an
> excellent reference on WGS 84 and it's relation to several
> other datums -- if you want it let me know [big PDF])
> POSC.ORG (Epicentre) has a detailed discussion of coordinate systems and
OK, thanks for those. I'd already encountered the first two via the
URL which I posted, but the third one was new (and quite useful).
> The European Petroleum Survey Group did publish an MS Access database
> with a gazilion coordinate systems from around the world, but I can't
> seem to locate them anymore (was epsg.org). I've a copy of the database
> last winter...
I don't have MS-Access, but FWIW, it's at:
In any case, it wasn't so much the specifics of individual coordinate
systems I was after, but an introduction to the key concepts and
Glynn Clements <glynn.clements at virgin.net>
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