[R] drawing arrows

Greg Snow Greg.Snow at imail.org
Fri May 15 20:11:16 CEST 2009


Duncan mentioned the arrows function, which may do everything you want.  But, also look at the my.symbols function in the TeachingDemos package for another way to draw arrows, or to draw your circles and arrows in 1 step.

-- 
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at imail.org
801.408.8111


> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of christophe dutang
> Sent: Friday, May 15, 2009 10:44 AM
> To: r-help at r-project.org
> Subject: [R] drawing arrows
> 
> Hi,
> 
> I would like to draw arrows in a classic 2D plot. Which package should
> I
> use? is there R base functions that do job?
> 
> On google, I could not find any useful discussion about this topic,
> except a
> link to the function 'grid.arrows' of the grid package.
> 
> My problem is I would like to draw arrows at the edge of circles drawn
> by
> the 'symbols' function. Maybe there is already a dedicated function for
> this?
> 
> Any help is appreciated.
> 
> Christophe
> 
> 
> 
> --
> Christophe DUTANG
> Ph. D. student at ISFA
> 
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> 
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