id summary reporter owner description type status priority milestone component version severity resolution keywords cc 2855 RRD overviews do not preserve the NoData pixels in the base raster dataset gaopeng warmerdam "I have a dataset (a grid) with NoData pixels. I build overviews in AUX (RRD) format. The AUX overviews show value 0 instead of NoData. The .ovr works fine for the same base dataset." defect closed normal GDAL_Raster 1.6.0 normal fixed overview, HFA