How to name variables in a single plot

Dear Amari

Why not use legend?

y<- c(1:100)
x1<-seq(0.1,10, by=0.1) 
x2<-seq(0.5,50,by=0.5)
mydata<- data.frame(  y=y,  x1=x1, x2=x2)
matplot(mydata, type = "l" ,xlab="Time",ylab="MSE ", col = 1:3, lty = 1:3)
legend(10,90,c("line1", "line2", "line3"), col = 1:3, lty = 1:3)

You can work with text to place any text within the plot
See ?legend    ?text

Regards,

Christoph

--------------------------------------------------------------
Christoph Buser <buser at stat.math.ethz.ch>
Seminar fuer Statistik, LEO C13
ETH (Federal Inst. Technology)	8092 Zurich	 SWITZERLAND
phone: x-41-44-632-4673		fax: 632-1228
http://stat.ethz.ch/~buser/
--------------------------------------------------------------

Amir Safari writes:
 > 
 >  
 > 
 > Dear R Friends ,
 > 
 > I want to name my variables( more than 2 variables in a single plot) within a plot to distinct them from each other, but I cann't. How it is possible? I don't mean x and y axis using xlab or ylab. At the below , it follows some lines, only as an example that you could try please, if it is possible. I really thanks for your attention.
 > 
 > Amir
 > 
 >  
 > 
 >  
 > 
 > library(graphics)
 > 
 > y<- c(1:100)
 > 
 > x1<-seq(0.1,10, by=0.1) 
 > 
 > x2<-seq(0.5,50,by=0.5)
 > 
 > mydata<- data.frame(  y=y,  x1=x1, x2=x2)
 > 
 > matplot(mydata, type = "l" )
 > 
 > matplot(mydata, type = "l" ,xlab="Time")
 > 
 > matplot(mydata, type = "l" ,xlab="Time",ylab="MSE ")
 > 
 > 
 > 
 > __________________________________________________
 > 
 > 
 > 
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Dear R Friends ,

I want to name my variables( more than 2 variables in a single plot) within a plot to distinct them from each other, but I cann't. How it is possible? I don't mean x and y axis using xlab or ylab. At the below , it follows some lines, only as an example that you could try please, if it is possible. I really thanks for your attention.

Amir





library(graphics)

y<- c(1:100)

x1<-seq(0.1,10, by=0.1)

x2<-seq(0.5,50,by=0.5)

mydata<- data.frame(  y=y,  x1=x1, x2=x2)

matplot(mydata, type = "l" )

matplot(mydata, type = "l" ,xlab="Time")

matplot(mydata, type = "l" ,xlab="Time",ylab="MSE ")

example(matplot) gives some alternative ways of doing this.
Another way, not shown there, is via text:

text(rep(100,3), mydata[100,], colnames(mydata), pos = 2)