[R] graphic question

[Tighiouart, Hocine]

Thanks Peter. This worked fine. I guess my problem was that when I
maximize the graph window everything seems to expand, this is why I was
having trouble with it.


-----Original Message-----
From: Peter Ehlers [mailto:ehlers at ucalgary.ca] 
Sent: Thursday, April 15, 2010 4:54 AM
To: Tighiouart, Hocine
Cc: r-help at r-project.org
Subject: Re: [R] graphic question

On 2010-04-14 19:57, Tighiouart, Hocine wrote:
> Hello,
>
> I have a simple question that I could not really figure out. I am
plotting labels within a graph using the text function. I first plot the
first label by specifying the x and y coordinates on the graph. Then to
plot the second label next to it, I am using te strwidth function to get
the width of the previous label in user coordinate then add the maximum
width to the x value. However, this is not working:
>
> Here is an example:
>
> lab1<-c("Hocine&  Ruba 2000", "Yasmine 2004","Ziad was born in 2006")
> lab2<-c(20,22,45)
> lab3<-c(54677,10900,200)
> plot(-10:5,1:6)
> text(par("usr")[1],2:4,lab1,adj=c(0,0.5))
> text(par("usr")[1]+max(strwidth(lab1)),2:4,lab1,adj=c(0,0.5))
>
> However, this is not working OK. I would like to get the max width of
lab1 as it appears in the figure then add that amount to plot lab2 and
so forth. I would like to leave only one blank column between successive
labels.

Does this give you what you have in mind:

  text(par("usr")[1] + max(strwidth(paste(lab1, ""))),
       2:4,lab1,adj=c(0,0.5))

  -Peter Ehlers

>
> Thanks!
>
> Hocine
>
>
>
>
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>
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-- 
Peter Ehlers
University of Calgary