? approxfun f1 <- approxfun(x1,y1) f2 <- approxfun(x2,y2)
f1(x) - f2(x) But I'm not sure what you mean be compare...do you have a particular test in mind? Michael On Sat, Mar 31, 2012 at 8:04 PM, AbouEl-Makarim Aboueissa <[email protected]> wrote: > Dear All: > > I am trying to compare points on two regression lines given some specific > values of X. I am not sure how to do it in R and/or in SAS. Can someone help > me, and show me how to conduct such test in R. > > > You can use the following data for both lines. > > ### data for line 1: > ### ========= > > x1<-c(0.0,0.25,2.5,25.0,50.0) > y1<-c(100.0,79.0,74.0,36.0,8.0) > > > > ### data for line 2: > ### ========= > > x2<-c(0.0,0.25,2.5,25.0,50.0) > y2<-c(100.0,79.0,55.0,18.0,2.0) > > > ### these are the given values of X: > ### =================== > > x<-c(0.10,0.20,2.0,15.0,35.0) > > > thank you very much in advance > abou > > > > > > > > > ========================== > AbouEl-Makarim Aboueissa, Ph.D. > Associate Professor of Statistics > Graduate Program Coordinator > Department of Mathematics & Statistics > University of Southern Maine > 96 Falmouth Street > P.O. Box 9300 > Portland, ME 04104-9300 > USA > > > Tel: (207) 228-8389 > Fax: (207) 780-5607 > Email: [email protected] > [email protected] > > Office: 301C Payson Smith > > > [[alternative HTML version deleted]] > > _______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-sig-teaching _______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-sig-teaching
