Hello,
quantum wrote > > lets say I have these function and I want to have a graph on them > > y0=x^2 > y1=x^3 > > Then I say this > > x=seq(0,10,length.out=100) > plot(x,y0,y1,type="l") > > but R does not give me a graph. How would you do it? > First of all, try your own code: > y0=x^2 Error: object 'x' not found Unlike you've said, y0=x^2 is not a function. Functions in R look like this: y0 <- function(x) x^2 y1 <- function(x) x^3 This is chapter 10 of R-intro.pdf, "Writing your own functions". Also, use the help system. ?plot It will tell you that 'plot' plot x against y, not against two variables. plot(x, y0(x), type="l") lines(x, y1(x)) Or, use function 'curve'. curve(x^2, from=0, to=10, col="red") curve(x^3, from=0, to=10, col="blue", add=TRUE) And, please, read the manual above. It WILL save you time. Hope this helps, Rui Barradas -- View this message in context: http://r.789695.n4.nabble.com/To-make-a-graph-for-4-functions-tp4592941p4593083.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.
