Actually, the HFA driver *does* support overviews. It isn't obvious why it does not work for you. Perhaps you should consider upgrading to a newer GDAL version, but I don't think this is an issue with GDAL 1.5.2. Does gdaladdo work on the dataset ? If so, then it must be rather related to something wrong in your code. The "int[] pOverviewList = { overView*2}" is a bit strange, but it is difficult to know without more context.
Le jeudi 11 novembre 2010 08:00:15, Chaitanya kumar CH a écrit : > Zhenyu, > > GDAL's HFA driver doesn't support creation of overviews. It can only read > them. > > On Thu, Nov 11, 2010 at 9:16 AM, Zhenyu Lu <luzhenyu1...@gmail.com> wrote: > > Hi, all: > > I'm having an error while using function Dataset.BuildOverviews in my > > code. The error message is "BuildOverviews() not supported for this > > dataset". However, when I used the ".tif" file the BuildOverviews worked > > just fine. The > > code is: > > int[] pOverviewList = { overView*2}; > > int[] pBandList = new int[dataset.RasterCount]; > > int err = dataset.BuildOverviews("NEAREST", pOverviewList); > > if (err != (int)CPLErr.CE_None) > > > > return null; > > > > I'm using GDAL1.5.2 and C#2.0. Is it because the HFA driver doesn't > > support overview? Or is it a bug? Can anyone pointed out where is my > > problem? Thanks a > > lot! > > -- > > Zhenyu Lu > > SUNY-ESF > > > > > > _______________________________________________ > > 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