[gdal-dev] gdaladdo don't seem to work..

Pietro Rossin pierigis at gmail.com
Tue Feb 26 05:52:22 PST 2013


Ok, I found the answer for the aux/rrd pyramid here

http://lists.osgeo.org/pipermail/gdal-dev/2008-August/017850.html
Now I'm trying
Bie


2013/2/26 Pietro Rossin <pierigis at gmail.com>

> Hello Jukka
> thanks for your reply
> The axe file I think isn't necessary.
> If I delete it qgis can open and use pyramids...
> I got a good compromise between render and pyramid dimension with this
> command
>
> gdaladdo -r nearest --config COMPRESS_OVERVIEW deflate --config USE_RRD
> YES test.tif 4 16 32 64
>
> I get an aux file that is 420Mb (original gtiff is 1060Mb) and if I delete
> the .axe file qgis recognizes pyramids.
>
> the CCITTFAX4 compression method is good for the compression of the
> original image not for pyramids, because with this algorithm pyramid zoom
> is too dark. With deflate or jpeg the result is more pleasant.
>
> By the way
> --config USE_RRD YES should tell gdaladdo to create aux/rrd pyramids, that
> can be used with esri product (ex arcgis)
> Arcgis instead don't recognize these pyramids and asks if I want to create
> them (and it can't because of an unknown error..).
> Any idea?
> Thanks again
> Pietro
>
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>
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