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Re: Convert directed graph to undirected graph

  • To: mathgroup at smc.vnet.net
  • Subject: [mg111194] Re: Convert directed graph to undirected graph
  • From: Robert Wright <mathematicauser1 at yahoo.com>
  • Date: Fri, 23 Jul 2010 07:11:50 -0400 (EDT)

Bob, I suspect Jon is about to show us how this can be done with one alpha
character in F#


;-)

I considered updating my 1989 vintage Fortran skills recently and thought
the new parallel Fortran would be the way to go, however, Jon has certainly
made me wonder whether F# is a credible scientific workhorse. Every now and
then, I solve something in Mathematica and wish I had a faster computational
engine...especially when ploting vector fields. That said, it's not often I need
the extra speed and Mathematica does a fantastic job in most cases. Are others using F#,
and if so, what are your thoughts: is it a realistic replacement for Mathematica's
enormous functionality, or niche companion?

R   




________________________________
From: Bob Hanlon <hanlonr at cox.net>
To: mathgroup at smc.vnet.net
Sent: Thu, July 22, 2010 4:41:02 AM
Subject: [mg111194] [mg111148] Re: Convert directed graph to undirected graph


gr1 == GraphPlot[{
  1 -> 2, 2 -> 1, 3 -> 1, 3 -> 2,
  4 -> 1, 4 -> 2, 4 -> 4},
  DirectedEdges -> True]

gr2 == gr1 /. Arrow -> Line


Bob Hanlon

---- Jon Harrop <usenet at ffconsultancy.com> wrote:

==========================
What is the recommended way of doing this in Mathematica?

--
Dr Jon Harrop, Flying Frog Consultancy Ltd.
http://www.ffconsultancy.com



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