[R] plot(..., type="h") w/ origin not at y=0

[Cyril Humbert]

Is it a way to make plots with vertical lines, like plot(x, y, type="h"),
but starting from a different value than y=0.

For example, with x=1:3, y=-(1:3), y.orig=-3 :

  -1  |    
      |
y -2  |  |
      |  |
  -3  |  |  |  
      1  2  3 
         x
      
Thanks
-- 
Cyril Humbert 
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