[Qgis-developer] RE: ECW!!!

Peter Borissow peter.borissow at yahoo.com
Fri Mar 23 13:30:03 EDT 2012

I would not implement a new raster format. 

I suggest you look at JPEG2000. Its wavelet based and there are several open source implementations (OpenJPEG, Jasper, etc)


 From: Fred ETHEVE <fred.etheve at wanadoo.fr>
To: 'Even Rouault' <even.rouault at mines-paris.org>; cavallini at faunalia.it 
Cc: 'qgis-developer' <qgis-developer at lists.osgeo.org> 
Sent: Friday, March 23, 2012 1:15 PM
Subject: RE: [Qgis-developer] RE: ECW!!!
May we develop an Opensource .ECW, for example .OCW, with sources of
Because working with larges rasters as 100 000 x 100 000 is now current, and
it's not easy to manipulate .TIF > 30 Go!
Best regards

-----Message d'origine-----
Deа: Even Rouault [mailto:even.rouault at mines-paris.org] 
Envoyща: vendredi 23 mars 2012 14:15
└а: Fred ETHEVE
Ccа: 'Jo┼╛e Dete─Нnik'; 'qgis-developer'
Objetа: RE: [Qgis-developer] RE: ECW!!!

Selon Fred ETHEVE <fred.etheve at wanadoo.fr>:

> Thank you, all,
> ECW/win was OK with trunk (1.9.90) until 2 days before new nightly...
> perhaps, since, gdal used has been 1.9???!!!

Yes, you should perhaps open a ticket (if not already done by someone else)
in OSGeo4W trac instance to ask for the gdal-ecw plugin to be regenerated
against GDAL 1.9

> It's time to have an opensource wavelets compression!!!
> 1) Somebody knows Epsilon CW? Is -it possible with GDAL1.9 linux and win?

Yes, but the Epsilon lib won't read ECWs and you have probably to build GDAL
yourself against it because few packages will build it.
> Sent: Thursday, March 22, 2012 8:56 PM
> To: 'qgis-developer'
> Subject: [Qgis-developer] RE: ECW!!!
> 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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