[Gdal-dev] Adding Projection to ECW files ?

[Frank Warmerdam]

On 6/19/05, Bill Binko <bill at binko.net> wrote:
> 
> Hi everyone: I hope everyone enjoyed the conference.  If anyone has time
> to look at this, I'd really appreciate it.  I really would like to be busy
> making summary layers, but am stuck at this point.

Bill, 

Sorry for the delay in responding.  As always there are various
ways of approaching this.   Ideally at the point you were
generating the ECW file you would have set the coordinate system.
Something like this (assuming WGS84):

gdal_translate -of ECW -a_srs '+proj=utm +zone=17 +datum=WGS84' in.tif out.ecw

Assuming you don't want to regenerate the ECWs you should be able to push
the georeferencing into the PAM file (.aux.xml) with a small python script. 

I had intended to provide an example of this, but find that I have another bug
to pursue before I can complete this, but I had better send this email before
I reboot. 

Best regards,
-- 
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