Hi,<br><br>Try build a tileindex : <a href="http://www.gdal.org/gdaltindex.html">http://www.gdal.org/gdaltindex.html</a><br>It's really useful with big tiled dataset.<br><br>Best regards.<br><br><br><div class="gmail_quote">
2012/4/30 Andrea Peri <span dir="ltr"><<a href="mailto:aperi2007@gmail.com" target="_blank">aperi2007@gmail.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi,<br>I have a huge set of tiffs rasters.<br>Any single tiff is a geotiff tiled (256x256) and as an internal overview.<br><br>To can use this raster dataset to lower scales (full extension) I need to create a single simplified tiff raster of all this dataset.<br>
Now I need to create a single simplified tiff raster .<br><br>I don't know how is the better way to produce this simplified raster.<br>This because the original huge set of rasters are about 2 TB. Every raster is about 15000 x 15000 px.<br>
<br>SO I start creating a catalog named "cat_fogli.vrt" using gdalbuildvrt.<br>And after this was create, I tryed to produce an external overview of this catalog.<br>using this command:<br><br>gdaladdo -r average -ro --config BIGTIFF_OVERVIEW YES cat_fogli.vrt 256 512 1024 2048 4096<br>
<br>Unfortunately gdaladdo seem to be lock. It is take really many time and is always on 0%.<br><br>I don't know if is only a bug time due to the huge size of original raster dataset or I'm using the wrong way.<br>
<br>Thx,<span class="HOEnZb"><font color="#888888"><br><br>-- <br>-----------------<br>Andrea Peri<br>. . . . . . . . . <br>qwerty אטלעש<br>-----------------<br><br>
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