[gdal-dev] Re: gdal_rasterize 1.8.0 options

[Hermann Peifer]

On 05/02/2011 13:12, Even Rouault wrote:
>
> I've just had a look, but not being neither Dutch nor a specialist of
> (stereographic) projections, I don't feel competent enough to do any action on
> it. Those tickets plus the reading of
> http://udig.refractions.net/files/docs/api-
> geotools/org/geotools/referencing/operation/projection/Stereographic.html make
> me deeply confused and wondering if r21627 was really appropriate.

Hmm. This page confirms what I mentioned in ticket #2869: 
"Double_Stereographic" is simply the ESRI alias of 
"Oblique_Stereographic" (EPSG code 9809).

About r21627: I am afraid I do not understand enough about the inner 
workings of GDAL/OGR to make a judgement about whether this change was 
appropriate or not.

But by the end of the day and from what I remember when looking somewhat 
deeper into the issue, about 2 years ago: there is one stereographic 
projection (known as "the USGS formula" or "the approach given by 
Snyder") which translates into +proj=stere, and there is the other 
"Double_Stereographic", aka "Oblique_Stereographic" which is expected to 
end up as +proj=sterea.

Hermann