On Dec 13, 2013, at 9:50 AM, jim@jpes.com wrote:

> Is there a way to determine, using mathematical methods, if this step fun=
ction occured in a given file without actually graphing the file and physic=
ally looking at it?

Numeric differentiation?  There are assorted algorithms that will take more=
 than two points into account, IIRC.

BillW




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