Many thanks to all who replied to my e-mail. My problem was that I had not known about the approx function.
By the way, if I have x <- c(1990,1994,1995,1997), is there an automated way to fill in the gaps, i.e., to get c(1991,1992,1993,1996)? Cheers, Remigijus Wednesday, February 12, 2003, 12:09:33 PM, you wrote: PDB> Remigijus Lapinskas <[EMAIL PROTECTED]> writes: >> Dear all, >> >> I have two vectors and connect the points by line segments: >> >> x <- c(1990,1994,1995,1997) >> y <- c(30,40,80,20) >> plot(x,y,type="l") >> >> I want to get the values of y's on these lines at missing x's, >> i.e., at 1991,1992,1993,and 1996. Is there a simple way to do this? PDB> approx(x,y,c(1991,1992,1993,1996)) PDB> plot(x,y,type="l") PDB> points(approx(x,y,c(1991,1992,1993,1996)),pch="*",col="red",cex=5) PDB> -- PDB> O__ ---- Peter Dalgaard Blegdamsvej 3 PDB> c/ /'_ --- Dept. of Biostatistics 2200 Cph. N PDB> (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 PDB> ~~~~~~~~~~ - ([EMAIL PROTECTED]) FAX: (+45) 35327907 ______________________________________________ [EMAIL PROTECTED] mailing list http://www.stat.math.ethz.ch/mailman/listinfo/r-help