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Re: NetworkFlow example

  • To: mathgroup at smc.vnet.net
  • Subject: [mg117903] Re: NetworkFlow example
  • From: Syd Geraghty <sydgeraghty at me.com>
  • Date: Sun, 3 Apr 2011 06:59:11 -0400 (EDT)

Hi Jon,

This may not be of much help if you have only access to Mathematica 7 but Mathematica 8.0.1 gives:

<< Combinatorica`

General::compat: Combinatorica Graph and Permutations functionality has been superseded by preloaded functionaliy. The package now being loaded may conflict with this. Please see the Compatibility Guide for details.

In[3]:= NetworkFlow[
 FromAdjacencyMatrix[{{Infinity, 5, 3, Infinity, Infinity, 
    Infinity}, {0, Infinity, 2, 3, Infinity, Infinity}, {0, 2, 
    Infinity, Infinity, 4, Infinity}, {Infinity, 0, Infinity, 
    Infinity, 1, 2}, {Infinity, Infinity, 0, 0, Infinity, 
    5}, {Infinity, Infinity, Infinity, 0, 0, Infinity}}, 
  EdgeWeight], 1, 6]

Out[3]= 7

It does not hang but the documentation is very sparse so without spending a chunk of time I am not sure if the output is what you expected.

Cheers .... Syd

Syd Geraghty B.Sc, M.Sc.

sydgeraghty at mac.com

Mathematica 8.0 for Mac OS X x86 (64-bit) (February 23, 2011)
ReleaseID:    8.0.1.0 (2063982, 2063639)
MacOS X V 10.6.7 Snow Leopard 
MacBook Pro 2.33 GHz Intel Core 2 Duo  2GB RAM

On Apr 2, 2011, at 12:40 AM, Jon Harrop wrote:

> Can anyone give an example use of the NetworkFlow function that works in 
> Mathematica 7?
> 
> The only example I have found is:
> 
> https://groups.google.com/group/comp.soft-sys.math.mathematica/browse_thread/thread/e0b2be1c4e4c88f0/
> 
> but it just hangs, as other people have observed before me:
> 
> https://groups.google.com/group/comp.soft-sys.math.mathematica/browse_thread/thread/5280780aaebc2158
> 
> -- 
> Dr Jon Harrop, Flying Frog Consultancy Ltd.
> http://www.ffconsultancy.com 
> 
> 



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