I fact, I forgot to write a piece of logic, there is a shift. Radim
On Thu, Mar 10, 2011 at 8:13 PM, Radim Blazek <radim.bla...@gmail.com> wrote: > I have changed how GDAL provider reads the data, it should be fast again. > > > BUT! I am not absolutely sure that resampling is perfect and the > nearest neighbour is alway nearest. I dont think however that anybody > could notice that in normal work. I would appreciate however if > somebody with fresh brain could check the alignment fiddling. > http://trac.osgeo.org/qgis/browser/trunk/qgis/src/providers/gdal/qgsgdalprovider.cpp#L529 > > More pointers - more crashes expected! > > Radim > > > On Wed, Mar 9, 2011 at 8:30 PM, Giovanni Manghi > <giovanni.man...@gmail.com> wrote: >> Hi, >> >> On Tue, 2011-03-08 at 20:17 +0100, Radim Blazek wrote: >>> Merged to trunk. >> >> >> I'm testing the new raster capabilities of QGIS and I would like to have >> your opinion on a certain matter before eventually filing a ticket. >> >> I have a bunch of big tiff rasters (> 1gb, sometimes > 2gb), with >> internal tiles and/or overviews. >> >> What I'm seeing is that now those rasters take quite a *lot* (making >> qgis not responsive for a while) to be rendered, before the merge it was >> all much quicker. >> >> As exemple: >> >> on QGIS 1.6 a 1.7gb geotiff with tiles and overviews opens in (more or >> less) 1 sec., in trunk now takes (more os less) 1 minute! >> >> >> After the raster show in the canvas, also opening its properties take a >> long time. Before the merge was immediate. >> >> Zooming and panning it is also much slower than before the merge. >> >> Overall it seems like that tiles and overviews are ignored or not read., >> but to me seems that also opening big tiffs (> 1gb) without internal >> tiles and/or overviews takes a *lot* more than before the merge. >> >> >> anyone experiencing the same? >> >> >> cheers >> >> -- Giovanni -- >> >> > _______________________________________________ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer