[gdal-dev] problems with merging ecw files

[Simon Shak]

Depending on how large an output file there are limitations in the file
formats to consider. The older ecw library allows writing a file no larger
than 500mb.the newer one you need a special license to write at all.  The
geotiff will by default not write as big tiff which will also limit output
file size. Check the file formats page for details.
On May 27, 2014 1:29 AM, "Chrishelring" <christianhelring at gmail.com> wrote:

> hi,
>
> I´m trying to merge about 40 ecw files into one, using gdal_merge.py. it
> seems to work (no error), but when I´m trying to open the file, it says,
> "Unable to read header information: Cannot open file
> c:\temp\ortofoto2007\ortofoto2007.ecw".
>
> I´m using GDAL 1.11.0 with the following command:
>
> C:\TEMP\ortofoto2007>python C:\osgeo4w\bin\gdal_merge.py -o
> c:\temp\ortofoto2007
> \ortofoto2007.ecw --optfile c:\temp\ortofoto2007\orto07.txt
>
> Any help would really be appreciated. :)
>
> Christian
>
>
>
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