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Savgol - Differentiation problems [message #37973] Thu, 12 February 2004 06:29 Go to next message
richard.martin is currently offline  richard.martin
Messages: 3
Registered: February 2004
Junior Member
Has anyone tried using the SAVGOL routine with ORDER.gt.1?
Seems to need an extra scaling factor, is this correct?

RM

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Re: Savgol - Differentiation problems [message #38056 is a reply to message #37973] Mon, 16 February 2004 04:27 Go to previous message
bachmann is currently offline  bachmann
Messages: 1
Registered: February 2004
Junior Member
Hello,

RM schrieb:
> Has anyone tried using the SAVGOL routine with ORDER.gt.1?
> Seems to need an extra scaling factor, is this correct?

As far as I remember, no scaling factor is required.

For the Savitzky-Golay-Filter, you need to define the number of samples
left and right of the point to smooth, the degree of the smoothing
polynom, and the degree of the derivative (=0 for smoothing only).

But I guess, the IDL help has a list of all parameters for this function ;)

Best regards,

Martin

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