Re: [R] problem with using lines command on windows XP machine

From: Liaw, Andy <andy_liaw_at_merck.com>
Date: Fri 06 Jan 2006 - 01:14:38 EST


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:petr.pikal@precheza.cz]
> 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" <e.commandeur@uvt.nl>
> 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
> petr.pikal@precheza.cz
>
> ______________________________________________
> 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 Received on Fri Jan 06 01:38:41 2006

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