---------- Forwarded message ---------- From: Saâd HESSANE <[email protected]> Date: Mon, 2 Apr 2012 15:56:27 +0200 Subject: Re: [gdal-dev] Most optimal way of using tiles ? To: Oyvind Idland <[email protected]>
Hy, you can use "gdaladdo --config COMPRESS_OVERVIEW [DEFLATE | JPEG]" to create compressed overview. And then you can use gdalbuildvrt or gdaltindex to build an index of the files. 2012/4/2, Oyvind Idland <[email protected]>: > Hello, > > I got a huge dataset consisting of about 100 uncompressed TIFF's, each with > size 12599 X 9449 pixels with RGB bands. > Note, that the TIFF's are not georef'ed, instead there are .tfw's following > each file. Also, since they are about 350 MB each, > I guess converting them to a compressed format could speed things up (I/O). > > The "normal" approach would probably be to make a VRT dataset, and build > overviews. However, building a an > overview based on the entire VRT index seems a bit heavy in this case. > > Is it possible in some way to create compressed overviews (using gdaladdo) > for each file, and > then build a VRT based on these ? Will the VRT dataset utilize the > generated overviews ? > > > - oyvind > _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
