[Mapserver-users] EPSG codes

Delfos, Jacob jacob.delfos at maunsell.com
Wed Jun 2 00:27:33 EDT 2004


Daniel,

What would be the correct way of requesting an entry to be added to the
official EPSG? I tried to find out, but I haven't been able to find a person
in charge of that.

Jacob


-----Original Message-----
From: Daniel Morissette [mailto:dmorissette at dmsolutions.ca] 
Sent: Wednesday, 2 June 2004 12:12 PM
To: Zamil Murji
Cc: mapserver-users
Subject: Re: [Mapserver-users] EPSG codes


Zamil Murji wrote:
> Hello list,
> 
> I am very new to epsg codes and I'm having some difficulty finding the 
> correct code to use. Currently I am using a 4269 to show all of 
> canada, however, this makes everything look so disproportionate. I am 
> looking to use the lambert conical or lambert cylindrical codes, but I 
> can't find them anywhere. Ideally I would like to use the same 
> projection as the gmap application on the dmsolutions website.
> 

There is no LCC for Canada as part of the official EPSG list, but 
several sites recognize the unofficial code "EPSG:42304":

## NAD83 LCC for Canada
<42304> +proj=lcc +ellps=GRS80 +lat_0=49 +lon_0=-95 +lat_1=49 +lat_2=77 
+datum=NAD83 +units=m no_defs <>

If you want to use this code with MapServer then you'll have to add the 
line above to your PROJ4 "epsg" file, or download the following patched 
version:

http://maptools.org/dl/proj4-epsg-with-42xxx.zip

Daniel
-- 
------------------------------------------------------------
  Daniel Morissette               dmorissette at dmsolutions.ca
  DM Solutions Group              http://www.dmsolutions.ca/
------------------------------------------------------------

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