correction for epsg:2171 (was: Re: [Proj] Roussilhe Projection)

Maciek Sieczka werchowyna at
Thu Oct 27 16:31:37 EDT 2005

Frank Warmerdam wrote:
> On 21 Oct 2005 13:19:55 +0200, Maciek Sieczka <werchowyna at> wrote:
>>They, and you, are not wrong. I, and espg 2171, are wrong.  Good you have noticed it. I made a mistake following the epsg blindly here. Frank, Gerald, could you please fix that in your epsg 2171 definitions for y_0? y_0 should be 5467000, like Oscar and his sources say.
> Maciek,
> The best solution would be to download the latest EPSG database,
> and see if it has been corrected there.  If not, submit a change
> request to the EPSG.  If so, just hassle me to refresh the epsg
> definition file from the latest EPSG file.


I did as you said. Here's their reply. Shall I let you know when the
fixed EPSG arrives? Below is the copy of a message from EPSG employee.

EPSG wrote:

> Thank you for your message. We will review your comments and any changes
> made to the dataset will appear in the next release.
> */administrator at* wrote:
>     This messages was generated from the online contact form located at
>     message : CRS 2171 has WRONG false northing. Should be 
>     x0=5467000, not 5647000. See e.g.:
>     * The article from Geodeta magazine
>     * The table at the bottom in the Polish article "Z czego to wynika"
>     * The overview of many Polish projection parameters by Jacek M.
>     Holeczek
>     Also, the name you use in CRS 2171-2174 doesn't reflect original 
>     Polish name by any means. In Polish it is called panstwowy uklad
>     wspolrzednych plaskich "1965". In short: puwg "1965" or uklad 
>     "1965". The way you call it "Pulkovo 1942(58)" is not informative
>     to any Polish GIS user, cartographer or geodet.
>     Maciek

W polskim Internecie s? setki milionów stron. My przekazujemy Tobie tylko najlepsze z nich!

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