[R] Labels for Points- 2 character labels?

[Robert Baer]

I think you want to use text()

 x=1:15; y=16:30
 plot(x,y)
 text(x,y, as.character(x), pos=4)

----- Original Message ----- 
From: "ableape" <renaldo at ableape.us>
To: <r-help at stat.math.ethz.ch>
Sent: Wednesday, October 18, 2006 4:59 PM
Subject: [R] Labels for Points- 2 character labels?


>I would like to be able to label each point in a scatter plot with
> the numeric order of that point. for example, I create the following plot:
>
> plot(e,n)
> #
> # now I go back and create my labels
> #
> for(i in 1:length(e)) {                                    # lets say e 
> <10
>        pc <- as.character(e_order[i])               # e_order has an
> integer array 1,4,3,2... which is the order of e
>        points(e15[i], n15[i],pch=pc)                # this will plot
> 0-9 as data labels
>
>      }
> #
> The above works for single characters.  Now if the length of e[] is
> greater than 9, the character string converted by as.character will
> yield more than one digit. At this point, my labeling trick fails:-(
>
> 1) is there a way to create two character labels for a plot?
> 2) Or even better, is there a way to do what I am trying to
> do.  Label each point by its numeric order?
>
> Thanks for your help.
>
> Renaldo
>
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