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 the way to find the derivative on the curve at some points ? Thank you. Kagba ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
