How do you do a "moving 5pt 3rd order fit"?
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I want to model the upshift of a curve using a moving 5pt 3rd order fit... Does anyone know how this is done?
Thanks in advance for any feedback you can give me!
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Walter Roberson
am 12 Jun. 2012
A moving five point third order fit sounds to me like a cubic spline.
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John D'Errico
am 12 Jun. 2012
I'm not sure what upshift means, at least not in context of a manual transmission for a car.
You can use conv or filter to do a moving fit, so a Savitsky-Golay filter of some sort. It depends on what you are looking for.
If by upshift, you really mean the slope of the curve, I have movingslope posted on the FEX. It alows you to specify the support of the Savitsky-Golay model, as well as the order.
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