R help - Feb 2006 - Broken x-axis

Does anyone have experience creating a plot with a broken x-axis?
 
Specifically, as a pharmacologist, I typically need to present graphs
with 2 segments, one for vehicle and one for active doses..
 
  |
  | 
  |
    |----|   |------------------------------------------|
     V       1    3    10    30   100  etc.
                         Dose
 
Any help would be most appreciated!
 
Thanks,
 
Dr. Brett Ginsburg
Division of Alcohol and Drug Addiction
Department of Psychiatry
The University of Texas Health Science Center at San Antonio
7703 Floyd Curl Dr.
San Antonio, TX 78229
210-567-0871
ginsburg@uthscsa.edu
 

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brettginsburg at sbcglobal.net wrote:
> Does anyone have experience creating a plot with a broken x-axis?
>  
> Specifically, as a pharmacologist, I typically need to present graphs
> with 2 segments, one for vehicle and one for active doses..
>  
>   |
>   | 
>   |
>     |----|   |------------------------------------------|
>      V       1    3    10    30   100  etc.
>                          Dose
>  
> Any help would be most appreciated!
Hi Brett,

Have a look at the function gap.plot in the plotrix package.

Jim