[gdal-dev] ECW writing (was GTiff optimisation)

[Even Rouault]

> 
> But the ecwhdr utility that Jean-Claude mentionned is really what you would
> want to use, if you indeed just want to alter the projection info and/or
> georeferenced bounds. I thought that there was only a Erdas utility to
> achieve that, cool to see that it can be done with the SDK API. This gives
> me the idea that the ECW driver could be enhanced to implement the
> SetGeoTransform() and SetProjection() API, as well as some special
> metadata (likely PROJ and DATUM to be consistant with the creation
> options) through SetMetadataItem() to explicitely set the datum and
> projection codes. Then a simple python script could use those new
> capabilities to offer a service equivalent to the one of the ecwhdr
> utility. This would have the advantage of being available through GDAL as
> soon as the ECW driver has been compiled. I think I'm going to give it a
> try.

Implemented in http://trac.osgeo.org/gdal/ticket/4220 . Tested on Linux for 
now.

> 
> > Thanks,
> > 
> > Y.
> 
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