[GRASS-user] Re: [Proj] trouble transforming corine landcover raster projection Lambert laea to lcc

[Markus Neteler]

On Sun, Apr 08, 2007 at 02:50:59PM +0200, Yves Jacolin wrote:
> Hi Patrick,
> 
> I succeed to import Corine Land Cover inside GRASS wittout problem.
> 
> First of all, you need to create correct projection for your location. Both of 
> them seems to me incorrecte. Here what I get for my location where I import 
> corine Land Cover :
> -PROJ_INFO-------------------------------------------------
> name       : Lambert Conformal Conic
> proj       : lcc

I don't think that this is correct.

Corine data are to my knowledge in ETRS89-LAEA, not LCC:

GRASS 6.3.cvs (eu_laea):~ > g.proj -w
PROJCS["Lambert Azimuthal Equal Area",
    GEOGCS["grs80",
        DATUM["European_Terrestrial_Reference_System_1989",
            SPHEROID["Geodetic_Reference_System_1980",6378137,298.257222101],
            TOWGS84[0.000,0.000,0.000]],
        PRIMEM["Greenwich",0],
        UNIT["degree",0.0174532925199433]],
    PROJECTION["Lambert_Azimuthal_Equal_Area"],
    PARAMETER["latitude_of_center",52],
    PARAMETER["longitude_of_center",10],
    PARAMETER["false_easting",4321000],
    PARAMETER["false_northing",3210000],
    UNIT["meter",1]]

This corresponds to ETRS89 / ETRS-LAEA: EPSG 3035.

[...]
> > GRASS 6.0.2 (corineurope):~ > g.region -p
> > projection: 99 (Lambert Azimuthal Equal Area)
> > zone:       0
> > datum:      ** unknown (default: WGS84) **

This datum recognition error I have fixed last year:

2006-11-07 13:51  markus
        * convert.c: Handle non-standard ETRS_1989 datum name

I think that it is relevant. Please update to GRASS 6.2.1
to get the fix.

Hope this helps,
Markus