how to add a line in the graph?
On Dec 15, 2013, at 4:46 AM, ???? 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