[R] How to avoid sort of x values in dotplot?

2007-02-19 Thread Rene Braeckman 
I am trying to avoid that dotplot sorts my x-values. They are in the correct
order in the data.frame and the connections between the x-y values follows
this order, but the placement of the x-values on the x-axis is re-ordered.
In the following example, the order should be d1, d8 and d15. However,
this script places d8 at the highest x position. Any help is appreciated.
 
Subj - rep(1:4,each=3)
Time - rep(c(d1,d8,d15),4)
Conc - 1:12
df - data.frame(Subj,Time,Conc)
dotplot(Conc ~ Time | Subj,
   data = df,
   layout = c(2,2),
   type=b)
 
Thanks,
-Rene
Irvine, CA, USA

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Re: [R] How to avoid sort of x values in dotplot?

2007-02-19 Thread Bernd Weiss 
Am 19 Feb 2007 um 20:28 hat Rene Braeckman geschrieben:

From:   Rene Braeckman [EMAIL PROTECTED]
To: r-help@stat.math.ethz.ch
Date sent:  Mon, 19 Feb 2007 20:28:01 -0800
Subject:[R] How to avoid sort of x values in dotplot?

 I am trying to avoid that dotplot sorts my x-values. They are in the
 correct order in the data.frame and the connections between the x-y
 values follows this order, but the placement of the x-values on the
 x-axis is re-ordered. In the following example, the order should be
 d1, d8 and d15. However, this script places d8 at the highest
 x position. Any help is appreciated.
 
 Subj - rep(1:4,each=3)
 Time - rep(c(d1,d8,d15),4)
 Conc - 1:12
 df - data.frame(Subj,Time,Conc)
 dotplot(Conc ~ Time | Subj,
data = df,
layout = c(2,2),
type=b)
 

library(lattice)
Subj - rep(1:4,each=3)
Time - rep(c(d1,d8,d15),4)
Conc - 1:12
df - data.frame(Subj,Time,Conc)
df$Time - factor(df$Time,levels=df$Time)
dotplot(Conc ~ Time | Subj,
   data = df,
   layout = c(2,2),
   type=b)

HTH,

Bernd

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