[Gdal-dev] MrSID

[Martin Daly]

Frank, Andrey,

The MrSID driver opens MrSID images like this:

        poDS->poImageReader = new MrSIDImageReader( oFileSpec );

But there is a useful second parameter to the constructor, useWorldFile,
which defaults to false:

   MrSIDImageReader(const LTFileSpec& fileSpec,
                    bool useWorldFile = false,
                    MrSIDMemoryUsage
memoryUsage=MRSID_MEMORY_USAGE_DEFAULT,
                    MrSIDStreamUsage
streamUsage=MRSID_STREAM_USAGE_DEFAULT);

What do you think about changing the line to be:

        poDS->poImageReader = new MrSIDImageReader( oFileSpec, true );

That way, opening a (typically old) MrSID file that has an accompanying
.SDW "world" file will read the .SDW geo-referencing.  I can provide an
off-list sample if you need one.

Regards,
Martin