brian wrote:
by any chance do these tiffs have 4 bands? rgba?
In my case (not the original reporter), no. Happens with any number of
bands, well, at least with 3 and 7. Datatypes byte, float32 and int16,
if I recall correctly.
Vincent.
brian
On Thu, 2008-10-16 at 16:03 -0500, Ozy
Vincent,
Thanks for your hints. I've tried the following python script :
import gdal
ds=gdal.GetDriverByName('GTiff').Create('tiled.tif',1,1,4)
ds.GetRasterBand(1).Fill(0)
ds.BuildOverviews('NEAR', overviewlist = [2])
(I think it is important that the size of the image must be big
Ozy Sjahputera wrote:
I am trying to create image overviews for a GTiff file using
GDALDataset::BuildOverviews. I keep getting various errors such as:
ERROR 1: TIFFSetField:VISUAL.tif: Cannot modify tag Compression while
writing
...
writing
ERROR 1: TIFFSetField:VISUAL.tif: Cannot modify
