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zone2
2009 Sep 08
1
Derivative of nonparametric curve
Dear All,
I'm looking for?a way on computing the derivative of first and second order?of a smoothing curve produced by a nonprametric regression. For instance, if we run the R script below, a smooth nonparametric regression curve is produced.
provide.data(trawl)
Zone92?? <- (Year == 0 & Zone == 1)
Position <- cbind(Longitude - 143, Latitude)
dimnames(Position)[[2]][1] <- "Longitude - 143"
sm.regression(Longitude, Score1, method = "aicc", col = "red",? model = "linear")
Could someone please give some hints?on t...