Try: > lines(spline(x,y, method='n', n=250))
-- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare [EMAIL PROTECTED] (801) 408-8111 > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Nestor Fernandez > Sent: Wednesday, September 19, 2007 2:09 PM > To: [EMAIL PROTECTED] > Subject: [R] Smooth line in graph > > Hi, > > I'm trying to get smooth curves connecting points in a plot > using "spline" but I don't get what I whant. > > Eg.: > x<-1:5 > y <- c(0.31, 0.45, 0.84, 0.43, 0.25) > plot(x,y) > lines(spline(x,y)) > > Creates a valley between the first and second points, then > peaks at 3rd, and another valley between 4th and 5th. I'm > trying to get a consistently growing curve up to the 3rth > point and then a decrease like with SigmaPlot spline curves > or with Excel. > > I tried with different spline arguments and also lowess and > loess, with no success. Any ideas? > > Thanks. > > ______________________________________________ > 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. > ______________________________________________ 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.
