In my case, I got a VRT consisting of about 20 GeoTIFFs, where each tile has overviews in them.
I did write some sandbox code, and tried the gdalwarp tool. Both are equally slow. There are earlier posts related to this aswell. Den 13. apr. 2012 13:36 skrev "Even Rouault" <even.roua...@mines-paris.org> følgende: > Selon Oyvind Idland <oyvind.idl...@gmail.com>: > > > I am currently using GDAL 1.8.0, and have found that reprojecting VRT > > datasets can be incredibly > > slow (several minutes in my case). I believe there are bugs/tickets > related > > to this issue. > > > > I am only interested in reprojecting arbitrary datasets (or portions of > it) > > into a screen size window, on the fly. > > What is the most optimal way of doing this ? > > > > Should I read the desired window first, and then reproject it ? > > There are many potential causes that could explain an excessive slowness. > Without precise facts, it is hard to tell which strategy could improve > that. > > > > > - Oyvind > > > > >
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