Ah ok that explains it then. The heuristics in the Create() method only
takes into account the full resolution image, not potential overviews
you might add. So you have to go with the explict option =
['BIGTIFF=YES'] argument I suggested
Le 20/04/2021 à 21:37, ni hao a écrit :
Even,
Thank you for your reply.
You are right: ds = gdal.GetDriverByName('GTiff').Create( ) is under 4GB.
It was the next command pushes GTiff over 4GB:
ds.BuildOverviews('AVERAGE_MAGPHASE', [2,4,8,16])
Is there a way to specify BIGTIFF in ds.BuildOverviews() ?
------------------------------------------------------------------------
*From:* Even Rouault <even.roua...@spatialys.com>
*Sent:* April 20, 2021 3:56 PM
*To:* ni hao <ni_ha...@hotmail.com>; gdal-dev@lists.osgeo.org
<gdal-dev@lists.osgeo.org>
*Subject:* Re: [gdal-dev] Python create BigTIFF image
Le 20/04/2021 à 20:53, ni hao a écrit :
Hi list,
I use Python to create GeoTiff image, and I get the error because it
exceeds 4GB.
ds = gdal.GetDriverByName('GTiff').Create(output_magnitude, xsize,
ysize, 1, gdal.GDT_Float32)
ERROR 1: TIFFReadDirectory:Failed to read directory at offset
4294957836
ERROR 1: TIFFWriteDirectoryTagData:Maximum TIFF file size
exceeded. Use BIGTIFF=YES creation option.
I need to turn on *BIGTIFF=YES*
https://gdal.org/drivers/raster/gtiff.html
<https://gdal.org/drivers/raster/gtiff.html>
But I don't do know how. I tried:
ds = gdal.GetDriverByName('GTiff').Create(output_magnitude, xsize,
ysize, 1, gdal.GDT_Float32, BIGTIFF=YES)
ds = gdal.GetDriverByName('GTiff').Create(output_magnitude, xsize,
ysize, 1, gdal.GDT_Float32, options=['BIGTIFF=YES'])
But as you didn't specify compression, it should have done that
automatically. Can you indicate the exact values of xsize and ysize
you use ?
but it didn't work.
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