[Qgis-developer] RE: ECW!!!

Even Rouault even.rouault at mines-paris.org
Thu Mar 22 17:19:03 EDT 2012

Le jeudi 22 mars 2012 22:14:02, MORREALE Jean Roc a écrit :
> GDAL can use ecw's sdk 3.3 or 4, the standalone qgis version is built
> against 3.3 which is an outdated piece of junk but is under a licence
> that allows some kind of redistribution.

Well, as long as you just need the decompression part of the sdk, the 3.3 
version seems to do the job. You can grab one of the builds available at 
http://www.gisinternals.com/sdk/ (make sure to download the package with the 
ecw pluging as well) and convert your ecw's to geotiff for example.

> On the other side you've the free 4.x sdk which works better but is a
> really pain to get and joined by an even more painful license. Or you
> can buy it.
> And then you also have to take in account that if you use their binaries
> then you are not even garanted that your Windows desktops will accept
> them without throwing up because of some dll/mvc++ mismatch.
> My advice would be to ask the IGN to provide you the TIFF and then adapt
> them to your taste, that's what we are doing here.
> Le 22/03/2012 20:55, Fred ETHEVE a écrit :
> > Hi all,
> > Big, big problem in France with ECW!
> > A lot of my students work with QGIS, and French IGN give rasters in  ECW
> > formats Exists a solution to use ECW? Compiling gdal???
> > Regards,
> > 
> > Fred
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