[R-sig-teaching] graphing circles

[Gavin Simpson]

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G

On Sun, 2012-03-25 at 08:59 -0400, AbouEl-Makarim Aboueissa wrote:
> Dear R users:
>  
> It may be a silly question. I am trying to create a target diagram of 4 circles inside each other and adding some dots to describe different situations of validity and reliability. I need three of them.
>  
> one with all dots around the target.
> one with all dots in about one place, but far from the target.
> one with randomly scattered dots.
>  
>  I tried my best, but could not succeed. Can someone help me with creating such graph.
>  
> Thank you very much
> abou
>  
> 
> 
> ==========================
> AbouEl-Makarim Aboueissa, Ph.D.
> Associate Professor of Statistics
> Graduate Program Coordinator
> Department of Mathematics & Statistics
> University of Southern Maine
> 96 Falmouth Street
> P.O. Box 9300
> Portland, ME 04104-9300
> USA
>  
> 
> Tel: (207) 228-8389
> Fax: (207) 780-5607
> Email: aaboueissa at usm.maine.edu
>           aboueiss at yahoo.com
>  
> Office: 301C Payson Smith
>  
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