After reading all the answers and re-projecting to 4326 from the original .shp file (using save as..), i think that my problem is the projection of my .tiff data, because all my files in WGS84 projects at approximately the same coordinates (-92,35 as Brad said) but my raster file of the same area is at (25,35), so if i want to project all files at this CRS i have to "move" somehow my .tiff file at the above coordinates (and not the opposite as i was trying so long), am i right or wrong? Is there a way to change the coordinates that my tiff projects? I tried "on the fly" and by specifying the 4326 CRS from the file's properties but that doesn't changed anything, 25,35 remains.
Thanks all for the answers, I know i am a bit trouble! > Subject: RE: [Qgis-community-team] Problem changing a shapefile's coordinates > Date: Wed, 28 Sep 2011 10:30:09 +1300 > From: [email protected] > To: [email protected]; [email protected] > > 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
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