id summary reporter owner description type status priority milestone component version severity resolution keywords cc 3208 PNG transparency of color 0 not working jake jake "The NoDataValue is not interpreted as a transparent color value when it is set to 0 in the PNGCreateCopy function. This applies to both gray scale and RGB images but not images with a palette. If the image is of type RGB and the MetaItem NODATA_VALUES is set to ""0 0 0"" the transparency value is correctly written to the PNG but not if GDALRasterBand::SetNoDataValue function is used set the nodata value to 0 for the bands. If the image is of gray scale type the NODATA_VALUES is not used at all and GDALRasterBand::SetNoDataValue does not work if the nodata value is 0." defect closed normal 1.7.0 GDAL_Raster svn-trunk minor fixed png transparency nodata