[R] drawing direction fields

Greg Snow Greg.Snow at intermountainmail.org
Wed Oct 31 16:56:29 CET 2007

For drawing the arrows look at the my.symbols and ms.arrows functions in
the TeachingDemos package.  If you need help with determining the
directions of the arrows, then perhaps the Ryacas package or other link
to a mathematics package will help.

Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at intermountainmail.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 Jong-Hoon Kim
> Sent: Wednesday, October 31, 2007 1:50 AM
> To: r-help at r-project.org
> Subject: [R] drawing direction fields
> Dear useRs,
> I am trying to draw direction fields for some differential equations.
> So for I couldn't find much information on that.  Could 
> anybody give me a hint how to draw a direction field using R?
> Jong-Hoon
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