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Re: Mathematica in conjunction with outside program; NMinimize fails.

  • To: mathgroup at smc.vnet.net
  • Subject: [mg98923] Re: Mathematica in conjunction with outside program; NMinimize fails.
  • From: Szabolcs Horvát <szhorvat at gmail.com>
  • Date: Wed, 22 Apr 2009 05:09:11 -0400 (EDT)
  • References: <gsivfv$9dj$1@smc.vnet.net>

Andreas Pape wrote:
> Hello mathgroup.  I am using Mathematica in conjunction with an  
> outside program (Netlogo is the program.)  In a nutshell, my error is  
> the following: I can call the outside program with a numeric value  
> successfully, and Plot can call the outside program as one would  
> expect.  However, NMinimize calls the outside program with the  
> variable name, not a value, so it fails.  In short, I need to force  
> NMinimize to pass a numeric value to the objective function, not a  
> variable name.
> 
> More details:
> 
> I have the following functions defined in Mathematica:
> 
> 	SingleModelRun[ parametervalue_ ] := ....(definition irrelevant)

Hello,

Use singleModelRun[parametervalue_?NumericQ] := (definition)

This will do exactly what you asked for.  Make sure you 
Clear[singleModelRun] before you use this definition.

Szabolcs


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