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<DIV><SPAN class=961000914-01062009><FONT size=2 face=Arial>After reading the
HFA image format description, </FONT></SPAN><SPAN class=961000914-01062009><FONT
size=2 face=Arial>I was under the impression that GDAL would support external
.ovr files for this format but it seems that is not the case. I ran
quick test with gdaladdo ("gdaladdo -ro test.img 2 4 8") and got the following
error message: "ERROR 6: BuildOverviews() not supported for this dataset." After
poking through the code a bit I can see that HFA driver doesn't seem to be
using the default overview manager so it would seem that .ovr files aren't
actually ever being used (but i could be wrong). Was this the intended result,
or is this a bug?</FONT></SPAN></DIV>
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<DIV dir=ltr align=left><SPAN class=279480314-27012009><FONT size=2
face=Arial><SPAN lang=EN>
<P align=left>Christiaan</SPAN></FONT></SPAN></P></DIV></DIV></BODY></HTML>