Forgot to mention where you can see this breaking edge. It is visible at 2611570 / 1233622.
Stefan On Fri, Sep 4, 2015 at 9:29 PM, Stefan Ziegler <[email protected]> wrote: > Hi > > On Thu, Sep 3, 2015 at 10:58 AM, Even Rouault > <[email protected]> wrote: >> This occurs in the middle of a source tile, or at the boundary between 2 >> tiles >> ? > > In the middle of a source file. > >> Just to be sure: you mean you are using the above -s_srs and -t_srs on one of >> the tile that makes the ortho2014.vrt ? > > Yes. > >> And what if you make a VRT with just that source image ? > > I think it has nothing to do with the VRT. Using the gdalwarp command > on a single tif file it has the same breaking edge when using the -te > option. I did try the -et 0 option. Same error but not at the same > place (but only few pixels to the left) and much slower. > > gdalwarp -overwrite -s_srs "+proj=somerc +lat_0=46.952405555555555 > +lon_0=7.439583333333333 +ellps=bessel +x_0=600000 +y_0=200000 > +units=m +k_0=1 +nadgrids=./chenyx06a.gsb" -t_srs "+proj=somerc > +lat_0=46.952405555555555 +lon_0=7.439583333333333 +ellps=bessel > +x_0=2600000 +y_0=1200000 +units=m +k_0=1 +nadgrids=@null" -tr 0.125 > 0.125 -te 2611000 1233000 2612000 1234000 -co 'TILED=YES' > 611233_12_5cm.tif 2611_1233_12_5cm.tif > > I tried gdal_translate on the resulting image w/o the breaking edge > (w/o -te option): > > gdal_translate -tr 0.125 -0.125 -projwin 2611000 1234000 2612000 > 1233000 2611_1233_12_5cm.tif out.tif > > The resolution is perfect (=0.125) but the boundary is slightly > different (few centimeters). The requested area is partially outside > the image though. > >> Any chance you can try with 2.0 or the dev version ? > > I'm on dev version now. > > You can find here the single tiff, the ntv2 grid shift file and to > shell scripts: > http://www.catais.org/tmp/gdalwarp/ > > best regards > Stefan _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
