Re: Last question about plot (and NA)

["Dimitris Rizopoulos" <dimitris.rizopoulos@med.kuleuven.be>]

try something like the following:

plot(x$u, x$v, ylim = c(1, 10), type="l")
ind <- !is.na(x$w)
lines(x$u[ind], x$w[ind], col=8, type = "b", pch = 1)


I hope it helps.

Best,
Dimitris

----
Dimitris Rizopoulos
Ph.D. Student
Biostatistical Centre
School of Public Health
Catholic University of Leuven

Address: Kapucijnenvoer 35, Leuven, Belgium
Tel: +32/(0)16/336899
Fax: +32/(0)16/337015
Web: http://www.med.kuleuven.be/biostat/
    http://www.student.kuleuven.be/~m0390867/dimitris.htm


----- Original Message ----- 
From: "Tristan Lorino" <tristan.lorino@lcpc.fr>
To: <s-news@lists.biostat.wustl.edu>
Sent: Friday, March 10, 2006 2:56 PM
Subject: [S] Last question about plot (and NA)


> Thank you for your help. These days, I spend a lot of time on
> SPlus, so... I hope this will be my last question before a long
> time!
>
> I would like 2 plots on the same graphic:
>
> > x_data.frame(u=c(1,2,3,4,5),v=c(5,4,9,7,4),w=c(2,NA,7,NA,3))
> > plot(x$u,x$v,ylim=c(1,10),type="l")
> > points(x$u,x$w,col=8,type="p")
> But I would like to have 2 lines, instead of one line (x$v) and 3
> points (x$w). If I write
> > points(x$u,x$w,col=8,type="l")
> the second plot is not plotted  -- because of NA.
>
> How can I resolve this problem?
>
> Thank you,
> Tristan Lorino
>
>
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