Hi :) Paul, I wondered if you managed to post a bug-report about this? This guide might help http://wiki.documentfoundation.org/BugReport Regards from Tom :) Paul Lens wrote
Thanks a lot to Giovanni for having checked. I wondered where the difference of behaviour comes from. In fact, when the CRS is set in project properties TO EPSG: 3035, both shapefiles match as Giovanni noticed it. But when this project-wide CRS is set to EPSG: 31370, the shift appears. Here is a link to both screenshots: http://www.yousendit.com/download/T2dlak80YXliR0pBSXRVag. As I explained in a former mail, this shift appears in QGIS 1.7.2 and not in 1.6. If you want to have a try, 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 use "NATURA2000_PERIMETRES.shp". - european Natura 2000 limits: www.eea.europa.eu/data-and-maps/data/natura-2000 (I use the 2009 version) NB: I can manage without the european data. I reported this as it might help bug tracking and debugging. Is this a bug of 1.7.2.? Should I file a ticket? Thanks for all Paul On 20/12/2011 15:06, Giovanni Manghi wrote:Hi, beside the expected differences because the layers are from different sources, I can't see any particular shift http://ubuntuone.com/7TJnox4OFSxdMaPteNMsW9 cheers -- Giovanni -- On Mon, 2011-12-19 at 21:25 +0100, Paul Lens wrote: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 _______________________________________________ Qgis-user mailing list Qgis-user@.osgeo http://lists.osgeo.org/mailman/listinfo/qgis-user-- For unsubscribe instructions e-mail to: users+help@.libreoffice Problems? http://www.libreoffice.org/get-help/mailing-lists/how-to-unsubscribe/ Posting guidelines + more: http://wiki.documentfoundation.org/Netiquette List archive: http://listarchives.libreoffice.org/global/users/ All messages sent to this list will be publicly archived and cannot be deleted
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