[Qgis-user] ECW Projection

[jonathanmoules at warwickshire.gov.uk]

I can confirm my file has a .ecw.aux.xml

If I remove the ".xml" from the file name it does work in qgis.
Thanks
Jonathan 


From:   Giovanni Manghi <giovanni.manghi at gmail.com>
To:     jonathanmoules at warwickshire.gov.uk
Cc:     qgis-user at lists.osgeo.org
Date:   13/07/2011 16:15
Subject:        Re: [Qgis-user] ECW Projection




>         Just wondering if the project was aware of this as part of
> their ongoing ECW issues, but when you load a geo-referenced ECW into
> QGIS, it doesn't actually get properly referenced. Even if you
> manually set the projection for both the layer and the project it
> remains un-referenced with QGIS giving 0,0 co-ords to the top-left of
> the image. This same ECW works fine in GvSIG, Kosmo, MapWindow and
> ArcGIS. It's projected to EPSG: 27700. 



I was chatting a while ago with W. Macho and it was saying to me that it
had a similar problem, with all his ECWs rasters to render on top of
each other, as they don't had any referencing.

A few tests and we find the issue. It depends on the extension of the
file that (I guess) define the referencing. If the file is .aux then it
si fine for gdal, if it is .aux.xml (if I recall correctly) it seems
that gdal can't read the referencing.

cheers

-- Giovanni --





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