Kirk Wythers wrote:
On Jul 27, 2007, at 9:13 AM, Frank Warmerdam wrote:
Kirk Wythers wrote:
Does r.in.gdal use the rrd files (the ones that build pyramids to
speed up viewing) when importing img files? A bunch of land cover
images that I downloaded came with rrd files (in addition to the
imgs, and I'm trying to figure out if grass uses them).
Kirk,
r.in.gdal does not exactly import overviews from any of it's input
formats.
However, GDAL does support overviews in Imagine files (.rrd files) so if
you tried to import a big imagine files withoverviews into a low
resolution
location r.in.gdal would pull from an overview to speed up the import.
Thanks Frank,
Does r.in.gdal know to do that automagically (as long as the rrd files
are in the same directory as the img files)? or is there a flag that
needs to be set on the import?
Kirk,
It is automatic as is the nature of GDAL for this sort of thing.
Best regards,
--
---------------------------------------+--------------------------------------
I set the clouds in motion - turn up | Frank Warmerdam, [EMAIL PROTECTED]
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush | President OSGeo, http://osgeo.org
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