A major consideration is that MrSID exists mainly for Windows. For
64-bit Linux, the only option for MrSID at this point is their
precompiled utilities, extracting the data out into rasters in some
other format more GDAL-friendly. For 32-bit Linux, you can contrive to
build GDAL with MrSID support.
Personally, I have found that the runtime performance of wavelet
compression (ECW, MrSID, JPEG2000?) to be so poor as to not be worth the
trouble, and prefer to decompress into fast and space-hogging TIFFs.
And if you have a spare PC, have VMWare, or are willing to partition
your disk, you can always try it out yourself, run your own tests. I
always recommend our own free/oss product HostGIS Linux, especially for
someone who wants to avoid a lot of the learning curve of a new Linux
and skip to the maps.
--
Gregor Mosheh / Greg Allensworth, BS, A+
System Administrator
HostGIS cartographic development & hosting services
http://www.HostGIS.com/
"Remember that no one cares if you can back up,
only if you can restore." - AMANDA
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