gsdview
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Use existing overviews when available
Cached dataset items should use as much as possible overviews available in the original (cached) dataset.
If overviews are in an external file it could be copied in the cache directory when the cached dataset is created.
Imported from trac issue 26. Created by a_valentino on 2009-12-25T10:31:22, last modified: 2010-07-02T09:09:35