[R] Gradient field from loess

[Dieter Menne]

I have a two-dimensional loess fit, and need to calculate the
gradient field from it. Even after looking at loess.c and loess.f,
I don't understand the meaning of the returned polynomial coefficients.

Or is the brute force method of using a tangential approx
to the fitted values the way to go?

Dieter Menne


---------------------------------------
Dr. Dieter Menne
Biomed Software
72074 Tübingen
Tel (49) (7071) 52176
FAX (49) (7071) 55 10 46
dieter.menne at menne-biomed.de
www.menne-biomed.de

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