[Proj] Add custom projection

raul pra levis raulfalco1978 at hotmail.com
Tue Apr 1 07:38:52 PDT 2014


Hi Janne,
thanks for the response.
Our custom projection is an approximated Mercator Meter projection based on International 1909 ellipsoid.
The approx formula is:



y
= ln ( tan(1/2 * atan(tan(lat_rad) / 
1.0067642927) + PI/2) ) * 6378388.0


The choice of using an approximated projection is historical and related by hardware limitations of thirty years ago.

Regards,

Raul


> Date: Fri, 28 Mar 2014 21:52:28 +0200
> From: support.mn at elisanet.fi
> To: proj at lists.maptools.org
> Subject: Re: [Proj] Add custom projection
> 
> Hello,
> 
> could you tell us why do you have a custom mercator
> projection? and what is custom in it?
> 
> Regards: Janne.
> 
> ===========================================
> 
> raul pra levis [raulfalco1978 at hotmail.com] kirjoitti: 
> > 
> > 
> > 
> > Hi,
> > I work for a company where we have our custom mercator projection.
> > I already developed code snippets to integrate such projection in proj4 4.8.0  (c++).
> > Is there the chance to collaborate with develop team to integrate it in proj4 main trunk? 
> > 
> > Thanks and best regards,
> > 
> > Raul Pra Levis
> > 
> > 
> >  		 	   		  
> > _______________________________________________
> > Proj mailing list
> > Proj at lists.maptools.org
> > http://lists.maptools.org/mailman/listinfo/proj
> 
> 
> _______________________________________________
> Proj mailing list
> Proj at lists.maptools.org
> http://lists.maptools.org/mailman/listinfo/proj
 		 	   		  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/proj/attachments/20140401/f48bd208/attachment.html>


More information about the Proj mailing list