Alternatively, you can use curve(x^3, from = -5, to = 5); abline(h = 0, v = 0, lty = 2)
which will work even if the axes aren't in the middle of the image. Michael On Wed, Apr 11, 2012 at 6:54 PM, R. Michael Weylandt <michael.weyla...@gmail.com> wrote: > Please reply all to the list and don't send HTML. > > curve(x^3, from = -5, to = 5); grid() > > If you only want dotted lines at x = 0 & y = 0 use > > grid(2,2) > > instead. > > Michael > > On Wed, Apr 11, 2012 at 6:49 PM, John Kim <provicon2...@yahoo.com> wrote: >> thanks for the reply.. >> >> i tried the code below.. it shows the graph.. but how do i make x and y axis >> show up in the middle?? >> >> i am teaching secondary school math.. and i need to produce graphs for >> learning purpose.. >> >> i need nice x- y-axis.. in the middle.. with arrows at the end of axis.. >> >> can you tell me how i can realize that?? >> >> john >> >> >> From: R. Michael Weylandt <michael.weyla...@gmail.com> >> To: John Kim <ktown4...@gmail.com> >> Cc: r-help@r-project.org; provicon2...@yahoo.com >> Sent: Wednesday, April 11, 2012 2:37 PM >> Subject: Re: [R] r graphing >> >> The easiest way is to just use ?curve (type ?curve at the prompt to >> get documentation for curve): e.g., curve(x^3, from = -5, to = 5) >> >> You could also build the plot yourself like: >> >> x <- seq(-5, 5, length.out = 200) >> y <- x^3 >> >> plot(x,y) >> >> Michael >> >> On Wed, Apr 11, 2012 at 4:41 PM, John Kim <ktown4...@gmail.com> wrote: >>> can anybody tell me how i can draw x- y- axis and draw x^3 graph using >>> R graph?? >>> >>> i need nice coordinate system with legends and coordinate >>> numberings.. >>> >>> and nice graph of x^3 on it.. it will be nice if you tell me how i >>> can center the graph.. >>> >>> i want the origin (0,0) to be right in the middle of the graph. >>> >>> thank you so much. >>> >>> ______________________________________________ >>> 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. >> >> ______________________________________________ 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.
