Define/Build Overviews with ArcPy

Question

Using ArcPro 2.9 I can Define and Build Overviews using all the default settings successfully (output is TIF overviews), but trying the same in a script using Arcpy with the default ArcPro environment the TIF overviews are consistently blank no matter what I try. That is, the actual TIF files themselves are mostly empty (only a few kilobytes each) and although they are in the mosaic dataset table, they do not draw at all.

Is this a known bug? Even when copying the python output from ArcPro it will not work in a standalone script.

IceCreamBean · Answer

Hi Dan, thanks for the reply. Not using a reference. I'll look into tech support.

danretired · Answer

Don't know, but this appears in the help topic

* You cannot build overviews for a referenced mosaic dataset.

If you think it is a bug, then I would flag it to tech support.  At least they can track down why your process is failing.

IceCreamBean · Answer

Hi Dan, thanks for the reply. There is no definition query.

The command is as follows:

arcpy.DefineOverviews_management(mosaic_dataset, overview_dir)
arcpy.BuildOverviews_management(mosaic_dataset)