Le jeudi 11 août 2011 17:56:33, Lehtonen, Mika a écrit : > Hi, > sorry for asking something without googling it more beforehands, but I > believe my questions are so trivial that someone can answer to them > right away. > > I believe, with latest gdal versions you can "swap" GeoTiff internal > overviews or by other words, use for example your own tiffs as internal > overviews. Am I right?
I'm not 100% sure to understand your question/need, but here's my understanding anyway Let's suppose you have a TIFF, foo.tif You want to use a custom overview (perhaps not based directly from foo.tif, could be a scan of another map at the same extent but at another scale). You call it foo.tif.ovr Then GDAL will see foo.tif.ovr as an overview of foo.tif You want to package a new file with the main image containing the imagery of foo.tif and the overview containing the imagery of foo.tif.ovr You will use GDAL >= 1.8.0 and do : gdal_translate foo.tif bar.tif -co COPY_SRC_OVERVIEWS=YES See http://gdal.org/frmt_gtiff.html > > From which version has this been possible? > > Syntax for the proper option (gdal_translate or/and gdalwarp?) > > > reg. mika > _______________________________________________ > gdal-dev mailing list > gdal-dev@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/gdal-dev _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
