[Qgis-developer] Re: Raster providers

G. Allegri giohappy at gmail.com
Mon Jan 10 09:00:00 EST 2011

Yes, it is. I've told the same to the Geotools guys ;)
Nice because during holidays you remembered me about the approach Mapserer
uses, and again I was wondering if it will ever be abopted in Geotools...
Here it is :)


2011/1/10 Martin Dobias <wonder.sk at gmail.com>

> On Mon, Jan 10, 2011 at 9:49 AM, Radim Blazek <radim.blazek at gmail.com>
> wrote:
> > Hi Marco,
> > the code is quite ugly at moment, I still keep old pieces of code
> commented.
> >
> > Regarding the reprojection, I would like to implement the approximate
> > reprojection (similar to mapserver you showed me) in
> > QgsRasterDataProvider::readBlock and overwrite it only in WMS
> > provider. GDAL warp is too slow (as expected) and no way to speed it
> > up AFAIK.
> Btw. today GeoTools/GeoServer guys published a blog post about
> improving raster reprojection speed:
> http://geo-solutions.blogspot.com/2011/01/developers-corner-improving.html
> There's also a link to a more verbose 35-page tech report on this
> matter. From a brief look it's the same approach as used in MapServer.
> Martin
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