gdal Unable to replace a RAT in GTiff C++

Failing test case on current master:

in autotest/gcore/rat.py

def test_rat_4():

    ds = gdal.GetDriverByName('GTiff').Create('/tmp/rat_4.tif', 1, 1)
    rat = gdal.RasterAttributeTable()
    rat.CreateColumn('VALUE', gdal.GFT_Integer, gdal.GFU_MinMax)
    rat.CreateColumn('CLASS', gdal.GFT_String, gdal.GFU_Name)
    rat.SetValueAsInt(0, 0, 123)
    rat.SetValueAsString(0, 1, 'Class1')
    ds.GetRasterBand(1).SetDefaultRAT(rat)
    ds = None

    ds = gdal.OpenEx('/tmp/rat_4.tif')
    gdal_band = ds.GetRasterBand(1)
    rat = gdal_band.GetDefaultRAT()
    assert rat is not None
    assert rat.GetValueAsInt(0, 0) == 456
    ds = None

    # Replace existing RAT
    rat = gdal.RasterAttributeTable()
    rat.CreateColumn('VALUE', gdal.GFT_Integer, gdal.GFU_MinMax)
    rat.CreateColumn('CLASS', gdal.GFT_String, gdal.GFU_Name)
    rat.SetValueAsInt(0, 0, 789)
    rat.SetValueAsString(0, 1, 'Class1')

    ds = gdal.OpenEx('/tmp/rat_4.tif', gdal.OF_RASTER | gdal.OF_UPDATE)
    ds.GetRasterBand(1).SetDefaultRAT(rat)
    ds = None

    ds = gdal.OpenEx('/tmp/rat_4.tif')
    gdal_band = ds.GetRasterBand(1)
    rat = gdal_band.GetDefaultRAT()
    assert rat is not None
    assert rat.GetValueAsInt(0, 0) == 789
    ds = None

Asked Oct 08 '21 15:10

elpaso