It probably should. The default behaviour in QGIS is to assume. I've set mine so that if it doesn't know, it asks (have a look under settings).
-ramon. On 08/04/2011, at 16:41 , Duarte Carreira wrote: > But shouldn’t QGIS identify the CRS correctly? Or at least say it is unknown? > Stating the wrong CRS will misguide users. > > Duarte > > De: [email protected] [mailto:[email protected]] > Enviada: quinta-feira, 7 de Abril de 2011 20:34 > Para: Duarte Carreira > Cc: [email protected] > Assunto: Re: [Qgis-user] postgis and custom CRS > > You'll need to define the coordinate system in QGIS as well as PostGIS, & > probably tel QGIS which projection to use fro the project & the layer. > > Brent Wood > > --- On Fri, 4/8/11, Duarte Carreira <[email protected]> wrote: > > From: Duarte Carreira <[email protected]> > Subject: [Qgis-user] postgis and custom CRS > To: "[email protected]" <[email protected]> > Date: Friday, April 8, 2011, 5:15 AM > > Hi. > > > > I’m seeing this behavior and would like to confirm it. > > > > When I add a PG layer that has a custom CRS, QGIS says it is WGS84 (in the > metadata tab in properties). > > > > In PG I have the custom CRS defined like this: > > > > Srid: 9102160 > > Auth_name: ESRI > > Auth_srid: 102160 > > Srtext: > "PROJCS["Datum_73_Hayford_Gauss_IGeoE",GEOGCS["GCS_Datum_73",DATUM["Datum_73",SPHEROID["International_1924",6378388,297]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",200180.598],PARAMETER["False_Northing",299913.01],PARAMETER["Central_Meridian",-8.131906111111112],PARAMETER["Scale_Factor",1],PARAMETER["Latitude_Of_Origin",39.66666666666666],UNIT["Meter",1],AUTHORITY["EPSG","102160"]]" > > Proj4text: "+proj=tmerc +lat_0=39.66666666666666 +lon_0=-8.131906111111112 > +k=1 +x_0=200180.598 +y_0=299913.01 +ellps=intl +units=m > +towgs84=-288.885,-91.744,126.244,-1.691,0.410,-0.211,-4.598 +no_defs" > > > > Can someone confirm? > > > > Thanks, > > Duarte > > > -----Inline Attachment Follows----- > > _______________________________________________ > Qgis-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/qgis-user > > _______________________________________________ > Qgis-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/qgis-user _______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user
