Here is a very documented blog post about the comparative use of ecw or compressed gtiff
http://blog.webmapper.com.au/ You can use basic gdal command line to get a compressed gtiff from ecw, with very good performances. For example : # convertir l'ecw gdal_translate -of GTiff -co "TILED=yes" -co "PHOTOMETRIC=YCBCR" -co "COMPRESS=JPEG" input.ecw output.tif # créer la pyramide gdaladdo -r average --config COMPRESS_OVERVIEW JPEG --config PHOTOMETRIC_OVERVIEW YCBCR --config INTERLEAVE_OVERVIEW PIXEL compressed.tif 2 4 8 16 32 64 128 Will provide a geotiff with great performances and not so big compared to the ecw. And as other suggested, open source wavelet is in progress too and must be burried out ! Michael 2013/3/15 <jr.morre...@enoreth.net> > On 2013-03-15 11:14, Vincent Picavet wrote: > >> I can understand Fred's frustration. Let's see a new plugin in OSGEO4W >>> sooner than later. >>> >> >> It's up to you then. >> > > I was going to write the same thing, ECW is proprietary viper's nest, the > work to make it usable on QGIS should be done by ERDAS or by the people > using it. > > For those wanting a good wavelet format, there is OpenJPEG 2.0. If it > doesn't fit the bill for you then they should think about supporting it > like the CNES did instead of asking a open software to support a black box > with a stupid license. > > ______________________________**_________________ > Qgis-developer mailing list > Qgis-developer@lists.osgeo.org > http://lists.osgeo.org/**mailman/listinfo/qgis-**developer<http://lists.osgeo.org/mailman/listinfo/qgis-developer> >
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