lines() connects the `dots' given. If you want straight lines spanning the entire graph, you are better off with abline().
Andy From: Edwin Commandeur > > Hi Petr and Eric, > > Thanks for your comments. > > To plot a vertical line, using "lines(0)" does not work, but > > lines(c(-1,0),c(0,1)) > > does the work in my simple test example. I just interpreted the ?lines > documentation wrong. > > So the "lines" command does work on my pc. Off course > "abline(v=0)" will > also do the job in this specific example... > > Sorry for the trouble, > > Edwin > > -----Original Message----- > From: Petr Pikal [mailto:[EMAIL PROTECTED] > Sent: donderdag 5 januari 2006 13:32 > To: Edwin Commandeur; r-help@stat.math.ethz.ch > Subject: Re: [R] problem with using lines command on windows > XP machine > > > Hi > > On 5 Jan 2006 at 11:27, Edwin Commandeur wrote: > > From: "Edwin Commandeur" <[EMAIL PROTECTED]> > To: <r-help@stat.math.ethz.ch> > Date sent: Thu, 5 Jan 2006 11:27:01 +0100 > Subject: [R] problem with using lines command on > windows XP machine > > > Hello, > > > > I'm using R version 2.2.0 installed on windows XP machine, with SP2 > > (maybe it's also interesting to note it's laptop, so it outputs to a > > laptop screen) a l and I wanted to draw a line in a graph, > but it does > > not seem to work. > > > > To test it I use the following code: > > > > x = c(-1,0,1) > > y = c(-1,0,1) > > plot(x,y, type="l", xlim=c(-1,1), ylim=c(-1,1)) > > lines(0) > > quite close > > abline(v=0) > > draws a vertical line at x=0 > > from help page > Arguments: > > x, y: coordinate vectors of points to join. > > Maybe to mention abline in See also of lines help page could be good > > HTH > Petr > > > > > > > If I understand the documentation right this should draw a > line (with > > default settings, I'm not setting any parameters) at x=0. > > > > I tried goofing around a bit setting linewidth and color > differently, > > I tried using xy.coords etc, but no line appeared in the graph. > > > > The commands abline and segments work perfectly fine (so I am now > > using segments to plot the line I want), but I still think the lines > > command should work. > > > > Does anybody has similar problems drawing lines on XP machines (or > > laptops in general?)? Or I am doing something abominably wrong? > > > > Greetings and thanks in advance for any replies, > > Edwin Commandeur > > > > ______________________________________________ > > R-help@stat.math.ethz.ch mailing list > > https://stat.ethz.ch/mailman/listinfo/r-help > > PLEASE do read the posting guide! > > http://www.R-project.org/posting-guide.html > > Petr Pikal > [EMAIL PROTECTED] > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! > http://www.R-project.org/posting-guide.html > > ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html