Hi list,<br>I have a thousand of file with SRS A which I will to mosaic, reproject to SRS B and then retile (I will use GDAL 1.7.2).<br><br>What I will do is:<br>1- setting up a VRT using gdalbuildvrt on top of the original TIF files.<br>
2- reprojecting it to an intermediary VRT using gdalwarp (to SRS B).<br>3- retiling the reprojected VRT as 32768x32768 (or something smallers) geotiffs with gdal_retile by also adding JPEG compression, inner 512x512 tiling and bicubic interpolation on intermediate levels<br>
<br>How can I get best performances with this operations chaining?<br>From [1], I see I can play with "--config GDAL_CACHEMAX xxxx -wm xxxx" when invoking gdalwarp. (I will set GDAL_CACHEMAX as an environment var)<br>
I see that the wm parameter as well as inner tiling are set on the reprojected.vrt as GDALWarpOptions. <br>Is there a way to set the "-multi" parameter in the reprojected vrt too to make use of this feature to separate thread for I/O and thread for computation?<br>
<br>Regards,<br>Daniele<br><br>[1]: <a href="http://trac.osgeo.org/gdal/wiki/UserDocs/GdalWarp" target="_blank">http://trac.osgeo.org/gdal/wiki/UserDocs/GdalWarp</a><br><br clear="all"><br>-- <br>-------------------------------------------------------<br>
Ing. Daniele Romagnoli <br>
Software Engineer<br><br>GeoSolutions S.A.S.<br>Via Poggio alle Viti 1187<br>
55054 Massarosa (LU)<br>Italy<br><br>phone: +39 0584962313<br>fax: +39 0584962313<br>mob: +39 328 0559267<br><br><br><a href="http://www.geo-solutions.it" target="_blank">http://www.geo-solutions.it</a><br><a href="http://geo-solutions.blogspot.com/" target="_blank">http://geo-solutions.blogspot.com/</a><br>
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