[Qgis-developer] proj changed?

[Giovanni Manghi]

http://trac.osgeo.org/qgis/ticket/3645 ?



On Wed, 2011-04-06 at 13:57 +0200, Paolo Cavallini wrote:
> Hi all.
> I just noticed that currently EPSG:3003 is defined in QGIS as:
> 
> +proj=tmerc +lat_0=0 +lon_0=9 +k=0.9996 +x_0=1500000 +y_0=0 +ellps=intl
> +towgs84=-104.1,-49.1,-9.9,0.971,-2.917,0.714,-11.68 +units=m +no_defs
> 
> instead of the old:
> +proj=tmerc +lat_0=0 +lon_0=9 +k=0.9996 +x_0=1500000 +y_0=0 +ellps=intl
> +no_defs
> 
> Similarly for EPSG:3004.
> 
> The corrections have been already inserted as fake EPSG codes:
> 40000
> +proj=tmerc +lat_0=0 +lon_0=9 +k=0.9996 +x_0=1500000 +y_0=0 +ellps=intl
> +units=m +towgs84=-104.1,-49.1,-9.9,0.971,-2.917,0.714,-11.68 +no_defs
> 40001
> +proj=tmerc +lat_0=0 +lon_0=15 +k=0.9996 +x_0=2520000 +y_0=0 +ellps=intl
> +units=m +towgs84=-104.1,-49.1,-9.9,0.971,-2.917,0.714,-11.68 +no_defs
> 40002
> +proj=tmerc +lat_0=0 +lon_0=9 +k=0.9996 +x_0=1500000 +y_0=0 +ellps=intl
> +units=m +towgs84=-168.6,-34.0,38.6,-0.374,-0.679,-1.379,-9.48 +no_defs
> 40003
> +proj=tmerc +lat_0=0 +lon_0=9 +k=0.9996 +x_0=1500000 +y_0=0 +ellps=intl
> +units=m +towgs84=-50.2,-50.4,84.8,-0.690,-2.012,0.459,-28.08 +no_defs
> 
> So the fake codes 40000 and 40001 are now duplicates, and should be
> removed. 40002 and 40002 are useful, as they define ad hoc datum for
> Sardinia and Sicily.
> 
> Can we correct the internal db? Anyone knows the rationale for this
> change?
> 
> All the best.