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The Unscrambler User Manual
Camo Software AS
Modify - Transform - Derivatives - Gap-Segment
This method computes derivatives of up to the 4 th order. It is a more complex version of the Norris gap method
that includes an additional segment option for smoothing.
Dialog: Gap-Segment Derivatives
In the Scope field, select the samples and variables to be transformed. If necessary, press Define to enter the
Set Editor and define new sets.
In the Parameters field, choose the Derivative order, i.e. whether you want the 1st, 2nd, 3rd, or the 4th
derivative of the samples, from the drop-down list. Then, select the required Gap size and Segment size.
Note:

The segment size must be an odd number for 2nd or 4th derivative.

The gap size must be an odd number for 1st or 3rd derivative.
Modify - Transform - Derivatives - Savitzky-Golay
Savitzky-Golay differentiation computes derivatives of up to the 4th order, based on a polynomial
approximation of a portion of the curve.
Dialog: Savitzky-Golay Derivatives
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