Try something like this
http://gis.stackexchange.com/questions/10117/how-to-clip-a-raster-with-vector-boundaries
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Keep in mind that you need to have a license to write to sid files. If you
only have the license to read sids, when you partition your existing 4GB
sid, the output will most likely be geotiff which isn't as compressed as
sid so the overall file size may be larger.
On Apr 5, 2014 1:48 PM,
Hello List,
I have a large, (4.GB), .sid file which I would like to edit somehow so
I can use several smaller sections of the file. I checked the user
guide but did not find anything? Is it possible?
I'm using Win 8 OS, and just recently Qgis 2.2
Thanks for reading my request and hope
