[Gdal-dev] Creating overviews in different folder

[Frank Warmerdam]

Daniel Bäck wrote:
> Yes i would like to use the overviews with the original file, supplying a 
 > location or name of the overview file in the call to GDALOpen or similar.

Daniel,

I am not keen on changing the GDALOpen() or overview generation API to
start passing in names of overview files.

> The solution with the .vrt dataset might work out nicely for me, creating 
 > it with CreateCopy in the new location. Any immediate draw backs to this solution?

The main downside other than complication is that raster access through
a virtual file can be somewhat slower depending on how it is done.

Best regards,

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