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Thanks for the feedback - very helpful!

If I understand your suggestions for my third query correctly, you are using an]]> Jan 20, 2013 1:24:08 PM Jan 20, 2013 1:24:08 PM d.w.e.robbins@gmail.com 0 http://mathforum.org/kb/thread.jspa?messageID=8114328&tstart=0#8114328 >]]> Jan 20, 2013 7:49:08 AM Jan 20, 2013 7:49:08 AM heath@alumni.brown.edu 1 http://mathforum.org/kb/thread.jspa?messageID=8108044&tstart=0#8108044
I am trying to establish the best way to check the similarity of the pattern of change in two signals/vectors. For a simple example I]]> Jan 18, 2013 4:27:07 PM Jan 18, 2013 4:27:07 PM d.w.e.robbins@gmail.com 2