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<font face="Times New Roman, Times, serif">On 01/12/11 20:17, Frank
Warmerdam wrote:</font>
<blockquote cite="mid:4D2DFE51.1020201@pobox.com" type="cite"><font
face="Times New Roman, Times, serif"><br>
Yes, you can dump overviews to a standalone file using the
"dumpoverviews"
<br>
commandline application. I don't think it is built by default
so you might
<br>
need to go into gdal/apps and make it explicitly.
<br>
<br>
<br>
</font>
</blockquote>
<font face="Times New Roman, Times, serif">Yes, this works after
compiling: I get a standalone, gauss-resampled version of the
original file at a lower resolution. For larger areas I would need
to combine several raster files with gdal_merge, run gdaladdo on
the large file, dump the overviews and throw the original
combination file away. It's a long shot, but is it possible to run
gdaladdo on a vrt-file that only has pointers to the datasets? I
don't need the original merged file, only the derived downsampled
ones.<br>
<br>
Jan</font><br>
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