Hi, > -----Original Message----- > From: [email protected] [mailto:qgis-community-team- > [email protected]] On Behalf Of giannis Nj > Sent: Tuesday, 27 September 2011 10:53 p.m. > To: [email protected]; [email protected] > Subject: [Qgis-community-team] Problem changing a shapefile's coordinates > > Hello, > > I have a .tiff file and a .shp one, showing the same area in the map but they > come in different coordinates. From the Properties of these files I give them > the same projection (4326 - WGS84), same as the project properties, but still > they don't match. Actually, the coordinates of the shapefile remain the same > (different from the project's), something that I thought would change by > changing the CRS.
Like Micha said, assigning a different CRS to a layer does not change the coordinates of features in the layer, it just tells QGIS which CRS the coordinates are in, for the sake of 'on the fly' CRS transformation. For a layer to show up in the correct place you must assign it the correct CRS (if not already assigned), and either: (1) enable 'on the fly' CRS transformation, or (2) save copy of the layer, transformed into the same CRS as the project, as the other guys have described, and use that copy. (1) is fine if you only need to display the layer. If you need to do some sort of spatial analysis using layers in different CRSs you normally need to do (2), because many tools in QGIS require layers to be in the same CRS. > I guess it's not that simple to change the coordinates in a > file, so i would like to ask how it is possible to manage this so that the two > files will come in the same coordinates. Is something in the settings that i > forget to do? Is this able in QGIS or i have to try on another GIS program? > > Thank you. Regards, Alister _______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user
