R help - Apr 2005 - abline() with xyplot()

Hello all,
I'm a new user on R, and I used the abline function to draw a line on my
graph but it doesn't work with xyplot(). With the plot function, abline() is
ok but with plot it doesn't make what I want. Maybe it's a little thing
to change in plot() but I don't find what!
With xyplot I write this :
Xyplot(m~ordered(l,levels=1),
type="b",xlab="lagdist",ylab="Moran'I",lty=1,lwd=2,cex=1.5,pch=pch)
Abline(h=0,lty=2)
There's no error message but no line too.
If someone see my error or know how to do, thanks in advance.

Chloé Archinard
CEFE-CNRS 
1919 Route de Mende 
34293 Montpellier, Cedex 5, France

-- 
passerelle antivirus du campus CNRS de Montpellier
--



	[[alternative HTML version deleted]]

probably you want to look at this: help(panel.abline, 
package="lattice")


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: +32/16/336899
Fax: +32/16/337015
Web: http://www.med.kuleuven.ac.be/biostat/
     http://www.student.kuleuven.ac.be/~m0390867/dimitris.htm


----- Original Message ----- 
From: "Chloe ARCHINARD" <Chloe.ARCHINARD at cefe.cnrs.fr>
To: <r-help at stat.math.ethz.ch>
Sent: Tuesday, April 12, 2005 2:38 PM
Subject: [R] abline() with xyplot()


Hello all,
I'm a new user on R, and I used the abline function to draw a line on 
my graph but it doesn't work with xyplot(). With the plot function, 
abline() is ok but with plot it doesn't make what I want. Maybe it's a 
little thing to change in plot() but I don't find what!
With xyplot I write this :
Xyplot(m~ordered(l,levels=1), 
type="b",xlab="lagdist",ylab="Moran'I",lty=1,lwd=2,cex=1.5,pch=pch)
Abline(h=0,lty=2)
There's no error message but no line too.
If someone see my error or know how to do, thanks in advance.

Chlo? Archinard
CEFE-CNRS
1919 Route de Mende
34293 Montpellier, Cedex 5, France

-- 
passerelle antivirus du campus CNRS de Montpellier
--



[[alternative HTML version deleted]]

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On Tuesday 12 April 2005 07:38, Chloe ARCHINARD wrote:
> Hello all,
> I'm a new user on R, and I used the abline function to draw a line on
> my graph but it doesn't work with xyplot(). With the plot function,
> abline() is ok but with plot it doesn't make what I want. Maybe
it's
> a little thing to change in plot() but I don't find what! With xyplot
> I write this :
> Xyplot(m~ordered(l,levels=1),
>
type="b",xlab="lagdist",ylab="Moran'I",lty=1,lwd=2,cex=1.5,pch=pch)
> Abline(h=0,lty=2)
I'm not aware of anything called 'Xyplot' or 'Abline' (note
that R is
case sensitive).
> There's no error message but no line too.
> If someone see my error or know how to do, thanks in advance.
'xyplot' is part of a graphics system that is different from standard R 
graphics. If you want to use it, you first need to learn how. 
help(Lattice) has some pointers that should get you started. 

In this case, you probably want something like

xyplot(m ~ ordered(l, levels=1),
       type="b", xlab="lagdist",
       ylab="Moran'I", lty=1, lwd=2, 
       cex=1.5, pch=pch, 
       panel = function(...) {
           panel.abline(h = 0, lty = 2)
           panel.xyplot(...)
       })

-Deepayan