On Dec 15, 2013, at 4:46 AM, 水静流深 wrote: > t<--4:4 > y<-c(5,7,10,13,15,16,14,12,11) > plot(t,y,type="l") > > how can i add a curve y=0.83*t-0.44*t^2 in the graph? > [[alternative HTML version deleted]]
t<--4:4 y<-c(5,7,10,13,15,16,14,12,11) plot(t,y,type="l", ylim=c(-4,16)) curve( 0.83*x-0.44*x^2 , add=TRUE, col="red") -- David Winsemius Alameda, CA, USA ______________________________________________ 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.
