Hi thanks Johan, I'm working too with AIMS, Gdal was a test.
I have tried your command, but for the moment, the result is the same that i have for the moment, a cloud. What soft are you using for conversion ? We are using Erdas Imagine. I took a tif, then i generate an Ecw (with erdas imagine) I use your command. And finaly, i regenerate my Ecw based on my new tif. With Autocad Map3d, i see that my tiff is right (i can do transparency on white color), but when my tiff is converted, i apply the transparency on white, and i see a cloud near my image it's very difficult :'( 2013/2/5 Zac Spitzer <zac.spit...@gmail.com> > if you need some GDAL improvements, you could always engage Trevor to make > them > > > On Tue, Feb 5, 2013 at 9:57 AM, Johan Van de Wauw < > johan.vandew...@gmail.com> wrote: > >> I've not used the GDAL provider myself, but using AIMS raster driver the >> only way I found to make ecw transparent was adding a alpha layer. I did >> this using the gdal command line utility "nearblack" with the setalpha >> option: >> nearblack -setalpha -o out.tif in.ecw >> And afterwards converting the output to ecw again (exporting to ecw was >> not supported by nearblack). >> >> Johan >> >> >> >> On Mon, Feb 4, 2013 at 5:27 PM, StuartSteel < >> stuart.st...@atkinsglobal.com> wrote: >> >>> Bump. >>> >>> I cannot believe that Duck and myself are the only two people who require >>> nodata transparency using the GDAL raster provider? >>> >>> Can anyone shed some light on this, please? >>> >>> >>> >>> -- >>> View this message in context: >>> http://osgeo-org.1560.n6.nabble.com/raster-ECW-transparency-tp5029485p5032030.html >>> Sent from the MapGuide Users mailing list archive at Nabble.com. >>> _______________________________________________ >>> mapguide-users mailing list >>> mapguide-users@lists.osgeo.org >>> http://lists.osgeo.org/mailman/listinfo/mapguide-users >>> >> >> >> _______________________________________________ >> mapguide-users mailing list >> mapguide-users@lists.osgeo.org >> http://lists.osgeo.org/mailman/listinfo/mapguide-users >> >> > > > -- > Zac Spitzer > Solution Architect / Director > Ennoble Consultancy Australia > +61 405 847 168 > > > _______________________________________________ > mapguide-users mailing list > mapguide-users@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/mapguide-users > >
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