How to get UTM zone from MrSID

For discussion of LizardTech's free Decode SDK for MrSID and JPEG 2000.

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How to get UTM zone from MrSID

Postby kshehata » Thu Mar 11, 2010 2:33 pm

Is there an easy way to get the UTM zone from a MrSID file using the GeoExpress DSDK? I've looked through the metadata dump, and it looks like it's buried in other string values.
kshehata
 
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Postby kshehata » Mon Mar 15, 2010 2:38 pm

Figured it out. I somehow missed that the ProjectedCSTypeGeoKey tag is an integer value, not just an ASCII string. With that value and a few clues, I can deal with WGS84 and NAD83 datums for UTM, the only two that I care about.

Although this reminds of an old saying: the wonderful thing about standards is that there are so many to choose from!
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