I have no good reason to say this other than a niggling suspicion[1] but, yes I think it can.
-ramon. [1] We occasionally have problems with the georeferencer, where it tries to rotate an image that shouldn't need to be. It's rare enough that I haven't been able to track it down properly, but this is on my suspect list. On 26/10/2011, at 06:18 , G. Allegri wrote: > Sure Baren, this was just an exercise ;) > I wanted to test regeoreferencing a raster and compare manual georeferencing > against reprojection. > I'm wondering if manually regeoreferencing an already georeferenced raster > can break things... > > Inviato da dispositivo mobile > > Il giorno 25/ott/2011 22.43, "Barend Köbben" <kob...@itc.nl> ha scritto: > Hi Giovanni, > > I don't understand: you want to change a projected raster (in CRS 3003) to > another projection (23023), so why do you need the georeferencing plugin? > The data is already referenced, so it sounds to me you just want to > re-project it, using the Raster > Warp menu. > > Or am I missing something...? > > Yours, > > -- > Barend Köbben (Senior Lecturer) > ITC - University of Twente, Faculty of Geo-Information > Science and Earth Observation > PO Box 217, 7500AE Enschede (The Netherlands) > +31-(0)53 4874 253 > > > > On 25-10-11 21:23, "G. Allegri" <gioha...@gmail.com> wrote: > > >Thanks for the reply.My raster infos are: > > > >PROJCS["Monte Mario / Italy zone 1", > > GEOGCS["Monte Mario", > > DATUM["Monte_Mario", > > SPHEROID["International 1924",6378388,297.0000000000014, > > AUTHORITY["EPSG","7022"]], > > AUTHORITY["EPSG","6265"]], > > PRIMEM["Greenwich",0], > > UNIT["degree",0.0174532925199433], > > AUTHORITY["EPSG","4265"]], > > PROJECTION["Transverse_Mercator"], > > PARAMETER["latitude_of_origin",0], > > PARAMETER["central_meridian",9], > > PARAMETER["scale_factor",0.9996], > > PARAMETER["false_easting",1500000], > > PARAMETER["false_northing",0], > > UNIT["metre",1, > > AUTHORITY["EPSG","9001"]], > > AUTHORITY["EPSG","3003"]] > >Origin = (1554747.231034494200000,4924790.769999999600000) > >Pixel Size = (100.000000000000000,-100.000000000000000) > >Metadata: > > AREA_OR_POINT=Area > >Image Structure Metadata: > > INTERLEAVE=BAND > >Corner Coordinates: > >Upper Left ( 1554747.231, 4924790.770) ( 9d41'17.95"E, 44d28'24.73"N) > >Lower Left ( 1554747.231, 4678290.770) ( 9d39'49.22"E, 42d15'14.92"N) > >Upper Right ( 1771747.231, 4924790.770) ( 12d24'49.32"E, 44d25'28.44"N) > >Lower Right ( 1771747.231, 4678290.770) ( 12d17'30.22"E, 42d12'31.70"N) > >Center ( 1663247.231, 4801540.770) ( 11d 0'50.84"E, 43d20'53.55"N) > >Band 1 Block=2170x1 Type=Float32, ColorInterp=Gray > > Min=-3.876 Max=2051.503 > > Minimum=-3.876, Maximum=2051.503, Mean=152.789, StdDev=265.873 > > NoData Value=0 > > Metadata: > > STATISTICS_MINIMUM=-3.8761155605316 > > STATISTICS_MAXIMUM=2051.5034179688 > > STATISTICS_MEAN=152.78946158147 > > STATISTICS_STDDEV=265.87340110007 > > > > > >As you can see the CRS is correctly defined, and the other metadata are > >correct. > >OTFR works fine, the raster is correctly reprojected on the 23032 > >reference. > >No tfw or aux files in the same folder.... > > > >It's making me crazy! > >giovanni > > > > > >2011/10/25 Richard Duivenvoorde <rdmaili...@duif.net> > > > >On 2011-10-25 19:04, G. Allegri wrote: > >> Here it is the GCP list picture: http://bit.ly/suh5UL > >> (I wonder why ths srcY coordinates are shown as negative values) > > > > > >What is projection of your raster, is it really epsg:3003 (to be tested > >with 'gdalinfo yourraster'.) > > > >Is there maybe a tfw file hanging around which determines another extent > >four your source raster? If seen this behaviour recently while using the > >plugin. > > > >Try to set your tiff aside from other files, create a fresh epsg:23032 > >project with 'on the fly' and try again? > > > >Hope this helps. > > > >Regards, > > > >Richard Duivenvoorde > > > > > > > > > > > > > Faculty of Geo-Information Science and Earth Observation (ITC) > University of Twente > Chamber of Commerce: 501305360000 > > E-mail disclaimer > The information in this e-mail, including any attachments, is intended for > the addressee only. If you are not the intended recipient, you are hereby > notified that any disclosure, copying, distribution or action in relation to > the content of this information is strictly prohibited. If you have received > this e-mail by mistake, please delete the message and any attachment and > inform the sender by return e-mail. ITC accepts no liability for any error or > omission in the message content or for damage of any kind that may arise as a > result of e-mail transmission. > _______________________________________________ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/qgis-user _______________________________________________ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user