Hello, I calculate splines from messured points(x,y) of an unknown function f(x). e.g. x <- c(0.004115, 0.012345, 0.037037, 0.111110, 0.333330, 1.000000) y <- c(37, 50, 45, 60, 50, 66) w <- c(0.8540541, 0.8320000, 0.8822222, 0.7983333, 0.8220000, 0.8151515) as weights f <- smooth.spline(x,y,w)
Now I have y-values and want to calculate the x-value(s) from this spline. There is no further limitation to the spline, like monotonicity or anything else.. Does anyone know how to do this ? Gunther [EMAIL PROTECTED] ______________________________________________ R-help@stat.math.ethz.ch 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.