[Qgis-developer] Provider native raster band stats

[Marco Hugentobler]

Hi Tim

I'm not a raster guru, but the changes look good to me.
+1 for merging.

Regards,
Marco

Am Donnerstag, 7. Juli 2011, 00.47:25 schrieb Tim Sutton:
> Hi
> 
> During the Lisbon hackfest (between all those meetings!) I worked on
> updating the raster providers to be able to generate stats themselves.
> The raster provider base class has a default (and historically
> inefficient as we all know) implementation for collecting stats by
> walking over every cell in the raster twice. This method remains, but
> the providers can now supply stats themselves (heopfully using more
> efficient mechanisms). I have implemented gdal native stats already.
> Over the last few weeks I did some further testing and cleanups to
> this work. From my testing some of my worst case files opened in
> ~1minute rather than ~8+ minutes. It would be great if interested
> parties could test (details below) before I put it into master.
> 
> git remote add timlinux git://github.com/timlinux/Quantum-GIS.git
> git fetch timlinux
> git branch --track timlinux raster-stats
> git checkout raster-stats
> 
> I look forward to your feedback.
> 
> Regards


-- 
Dr. Marco Hugentobler
Sourcepole -  Linux & Open Source Solutions
Churerstrasse 22, CH-8808 Pfäffikon SZ, Switzerland
marco.hugentobler at sourcepole.ch http://www.sourcepole.ch
Technical Advisor QGIS Project Steering Committee