R help - Sep 2012 - Adding legends on plots using Lattice package

To dear Dr Sarkar and anyone that knows about Lattice package,

   I make 4 graphs by Lattice package. Each of the graphs has two time
series. All the series are plotted in plain lines by default, and I would
like one series to be in plain line and the other to be in dotted line in
each graph. How can I modify the command of xyplot in the following line to
achieve this? It seems that "key" or "auto.key"  parameters
are needed, but
I don't know how to do it. Thank you very much!


require(graphics)
library(lattice)
data1<-read.csv(file="G_Results_3FX1.csv", header=TRUE)
xts<-ts(data1[,2:9],frequency = 4, start = c(1983, 1))
xyplot(xts,
screen=list("a","a","b","b","c","c","d","d"),
layout=c(2,2),
scales=list(x="same",y="same"))



Miao

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On Mon, Sep 17, 2012 at 2:34 PM, jpm miao <miaojpm at gmail.com>
wrote:
> To dear Dr Sarkar and anyone that knows about Lattice package,
>
>    I make 4 graphs by Lattice package. Each of the graphs has two time
> series. All the series are plotted in plain lines by default, and I would
> like one series to be in plain line and the other to be in dotted line in
> each graph. How can I modify the command of xyplot in the following line to
> achieve this? It seems that "key" or "auto.key" 
parameters are needed, but
> I don't know how to do it. Thank you very much!
>
>
> require(graphics)
> library(lattice)
> data1<-read.csv(file="G_Results_3FX1.csv", header=TRUE)
Reproducible example please (the EuStockMarkets dataset may be suitable).

-Deepayan

> xts<-ts(data1[,2:9],frequency = 4, start = c(1983, 1))
> xyplot(xts,
screen=list("a","a","b","b","c","c","d","d"),
layout=c(2,2),
> scales=list(x="same",y="same"))
>
>
>
> Miao
>
>
>
>
>