[Qgis-user] Projection problem in QGIS 1.7.2 between EPSG 31370 and EPSG:3035

[Paul Lens]

Hi,

When I open projects saved earlier in QGIS 1.6 with 1.7.2, there is a 
shift between the belgian data, projected with EPSG 31370 (Belgian 
Lambert 72 conformal conic), and the european environmental agency data 
using  EPSG:3035 - ETRS89 / ETRS-LAEA.
The european shapefile is shifted 103m: X: 94m westward; Y: 64m northward.

Here are the links to the freely donwloadable shapefiles:
     - belgian (Walloon Region) Natura 2000 limits: 
http://environnement.wallonie.be/cartosig/telechargement/NATURA2000_DIFFUSION_BASE_MARS2010.zip 

     - european Natura 2000 limits:  
www.eea.europa.eu/data-and-maps/data/natura-2000     (I use the 2009 
version)

This seems to be a bug of QGIS 1.7.2. as I experienced no shift with 
QGIS 1.6, or do I miss something?


Paul

NB: QGIS 1.7.2 opens without problem an older project on the 
french-belgian border, where I experienced a shift between EPSG 31370 
and the different french Lambert projections.

FIY: this was then solved thanks to ticket OSGEO 3362 by making a custom 
projection with a minus sign added to one of the elements:

Custom projection:
+proj=lcc +lat_1=51.16666723333333 +lat_2=49.8333339 +lat_0=90 
+lon_0=4.367486666666666 +x_0=150000.013 +y_0=5400088.438 +ellps=intl 
+towgs84=-106.8686,52.2978,-103.7329,0.3366,-0.457,1.8422,-1.2747 
+units=m +no_defs

EPSG 31370:
  +proj=lcc +lat_1=51.16666723333333 +lat_2=49.8333339 +lat_0=90 
+lon_0=4.367486666666666 +x_0=150000.013 +y_0=5400088.438 +ellps=intl 
+towgs84=-106.869,52.2978,-103.724,0.3366,-0.457,1.8422,1.2747 +units=m  
+no_defs