legend() with option adj=1

2 messages · Jerome Asselin, Uwe Ligges

Tue, May 20, 2003 4:52 PM #

Hi there,

I want to justify to right the text of my legend. Consider this short 
reproducable example.

x <- 1:5
y1 <- 1/x
y2 <- 2/x
plot(rep(x,2),c(y1,y2),type="n",xlab="x",ylab="y")
lines(x,y1)
lines(x,y2,lty=2)
legend(5,2,c("1,000","1,000,000"),lty=1:2,xjust=1,yjust=1)
legend(5,1.5,c("1,000","1,000,000"),lty=1:2,xjust=1,yjust=1,adj=1)

Now, I would like to right-justify the text of the legend. As you can see, 
the option adj=1 does not give satisfactory results.

Is this a bug or is there an easy way that I'm missing?

Thanks,
Jerome

Jerome Asselin (J?r?me), Statistical Analyst
British Columbia Centre for Excellence in HIV/AIDS
St. Paul's Hospital, 608 - 1081 Burrard Street
Vancouver, British Columbia, CANADA V6Z 1Y6
Email: jerome at hivnet.ubc.ca
Phone: 604 806-9112   Fax: 604 806-9044

Uwe Ligges

Wed, May 21, 2003 12:19 AM #

Jerome Asselin wrote:

Works, e.g., with the following little trick:

  x <- 1:5
  y1 <- 1/x
  y2 <- 2/x
  plot(rep(x,2),c(y1,y2),type="n",xlab="x",ylab="y")
  lines(x,y1)
  lines(x,y2,lty=2)
  temp <- legend(5, 2, legend = c(" ", " "),
    text.width = strwidth("1,000,000"), lty = 1:2, xjust = 1, yjust = 1)
  text(temp$rect$left + temp$rect$w, temp$text$y,
     c("1,000", "1,000,000"), pos=2)

See ?legend for details, in particular the returned value.

Uwe Ligges