Re: [gdal-dev] Gdalinfo slow with big Rasterlite tables

2012-08-21 Thread Even Rouault
Le mardi 21 août 2012 09:53:50, Rahkonen Jukka a écrit : > Even Rouault wrote: > > Selon Rahkonen Jukka : > > > Even Rouault wrote: > > > >> Better after doing these. 4 minutes and 10 seconds for the biggest > > > >> layer, record before this was 6 minutes. Big enough difference for > > > >> being

Re: [gdal-dev] Gdalinfo slow with big Rasterlite tables

2012-08-19 Thread Even Rouault
> Yes, that makes gdalinfo fast. With my biggest layer the time went down > from 3 minutes to 3 seconds. However, my gdal_translate test fails. It > used to take three minutes before the zero appeared into the progress bar > but after that translation itself took only few seconds. After updating

Re: [gdal-dev] Gdalinfo slow with big Rasterlite tables

2012-08-19 Thread Rahkonen Jukka
Even Rouault wrote: > Jukka, >> >> Is gdalinfo perhaps walking through every single tile in the >> rasterlite table for gathering the image layer info? Could >> there be any other way to do it in more effective way on the >> GDAL side? > The Rasterlite driver needs to fetch the extent of the "XX

Re: [gdal-dev] Gdalinfo slow with big Rasterlite tables

2012-08-18 Thread Even Rouault
Jukka, > > Is gdalinfo perhaps walking through every single tile in the > rasterlite table for gathering the image layer info? Could > there be any other way to do it in more effective way on the > GDAL side? The Rasterlite driver needs to fetch the extent of the "_metadata" layers to estab

[gdal-dev] Gdalinfo slow with big Rasterlite tables

2012-08-18 Thread Jukka Rahkonen
Hi, I converted 153600 x 249600 pixels of rasterdata into a Rasterlite table. After creating overviews the result behaves well in Quantum GIS once the table is opened. Unfortunatly opening the table with QGis installed on a mini PC takes ages. I do not know what QGis is really doing but I guessed