[GRASSLIST:8537] Re: EPSG: Basic question...

Rhys Stewart rhys.stewart at gmail.com
Fri Oct 7 09:46:04 EDT 2005


Hi all,

two questions on the epsg files. First, who do I notify if an included
projection is incorrect (in my case JAD 69 is missing a few paramaters
so if I use the projection supplied stuff falls about 300m of) and how
can I get a projection added to the list?

Rhys

On 10/6/05, Christian Ferreira <christian.grass at gmail.com> wrote:
> Thanks Hamish,
>
>
> >
> > http://www.epsg.org/
> >
> > has the full database,
>
> Yes, I saw this, but I don't use Windows or MS Access. But maybe I will try
> to set a database with Postgresql/Mysql.
>
> > but for the PROJ.4 supplied version that GRASS
> > uses hunt for a file called something like  /usr/share/proj/epsg  on
> > your system. Open that in a text editor and search. A quick look turns
> > up two codes, 29100 and 29101. Codes for WGS84 lat/lon etc are in the
> > article text.
> >
> > $ grep -A1 Brazil /usr/share/proj/epsg
> > # SAD69 / Brazil Polyconic
> > <29100> +proj=poly +lat_0=0 +lon_0=-54 +x_0=5000000 +y_0=10000000
> +ellps=GRS67 +units=m +no_defs  <>
> > # SAD69 / Brazil Polyconic
> > <29101> +proj=poly +lat_0=0 +lon_0=-54 +x_0=5000000 +y_0=10000000
> +ellps=aust_SA +units=m +no_defs  <>
>
> BTW: The list included on GRASS (On "Create location From ESPG => EPSG
> Codes") is endless. It's really hard to find anything. I think that a search
> engine is necessary for it.
> Again, thank you for your help.
>
>
> Cheers,
> --
> Christian dos Santos Ferreira
> Oceanographer. Msc.
> Lab. of Fisheries Research and Hydroacustics
> Federal University of Rio Grande (FURG)
> Rio Grande - RS - Brazil
> Tel +55 (53) 32336528
> Website: http://poseidon.furg.br




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