[Proj] looking for the right params for RSO

[OvV_HN]

Van: proj-bounces at lists.maptools.org namens Mikael Rittri
Aan: PROJ.4 and general Projections Discussions
CC: Christoph Dohmen
Onderwerp: Re: [Proj] looking for the right params for RSO


I think the gamma parameter for omerc isn't yet supported in Proj.4.

......


Hermann Peifer gave the solution to use the +rot_conv flag instead.


REPLY:



Indeed, if I'm not mistaken, in PROJ only an alpha parameter is supported. 
But if you use +rot_conv, then the alpha is taken as a gamma.

In Evenden's libproj software both alpha and gamma can be given 
independently.

By the way: is Kertau on the Everest 1930 ellipsoid or on the Modified 
Everest 1830 ellipsoid?

>From ESRI parameters:

8058 Kertau_To_WGS_1984
GEOGTRAN["Kertau_To_WGS_1984",GEOGCS["GCS_Kertau",DATUM["D_Kertau",SPHEROID["Everest_1830_Modified",6377304.063,300.8017]].....

Oscar van Vlijmen