Take the 2-minute tour ×  Does anyone have experience
subsetting/clipping a large NAIP imagery file in MrSID format?
Some of the NAIP files we have are by county and they have
really large file sizes.  The files are from the FSA NAIP
Imagery.  How does it work if you subset a MrSID file? Does
ArcGIS has to uncompress it first before it can proceed to clip
or subset an area of interest ?  Thanks !  share|improve this
question It's not completely clear what you're asking here. Do
you want to know whether clipping a MrSID file can be done
efficiently within ArcGIS? Are you asking about the mechanics of
doing it? (I edited out your line about having experience with
these files because it was self-contradictory, but I take it you
have a working knowledge of using MrSID files in ArcGIS.) – 
whuber Nov 16 '11 at 4:28 Every time you clip a raster, you're
creating a completely new raster. To even display it, ArcGIS and
any other software capable of reading MrSID files has to decode
the file, and then to create a new r