Hi, I've found this description of how .stk are usally encoded. Maybe it could be of some help. ftp://ftp.meta.moleculardevices.com/support/stack/STK.doc JF -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www-old.cae.wisc.edu/pipermail/bug-octave/attachments/20090313/03201d88/attachment.html