[Qgis-developer] master slow reading rasters?

[Paolo Cavallini]

Il 22/03/2014 13:59, Luca Lanteri ha scritto:
> I had the same problem on a old version od qgis using large  raster with
> rotation parameter into the tfw file.  May be the same issue?
> 
> Il 21/mar/2014 09:30 "Paolo Cavallini" <cavallini at faunalia.it
> <mailto:cavallini at faunalia.it>> ha scritto:
> 
> Il 20/03/2014 18:28, Giovanni Manghi ha scritto:
> 
>>> yes, apparently it depends on the size of the raster (I'm trying
> with pretty large ones)
> 
>> how much large? I'm testing with 9gb rasters and it is lighting fast
>> (just fast wothout overviews).
> 
> <3Gb
> Perhaps this has something to do with colour table?

This is what I use for testing:
http://rmgsc.cr.usgs.gov/outgoing/ecosystems/AfricaData/
All the best.
-- 
Paolo Cavallini - www.faunalia.eu
QGIS & PostGIS courses: http://www.faunalia.eu/training.html