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MathGroup Archive 2005

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Re: Casting a Command as a String

  • To: mathgroup at smc.vnet.net
  • Subject: [mg58952] Re: Casting a Command as a String
  • From: Peter Pein <petsie at dordos.net>
  • Date: Mon, 25 Jul 2005 01:12:08 -0400 (EDT)
  • References: <dbv9og$efo$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Bruce Colletti schrieb:
> I have a list of (Combinatorica) graphs (e.g., X = {Cycle@4,CompleteGraph@3}), and want to automatically display each with the command as the display title.      
> 
> For instance, manually working the above list:
> 
> ShowGraph[Cycle@4, PlotLabel->?Cycle@4?];
> ShowGraph[CompleteGraph@3,PlotLabel->?CompleteGraph@3?];
> 
> How do I automate this for an arbitrary list of (Combinatorica) graphs?  Although Scan[ShowGraph,X] displays the titleless graphs, I can?t figure out how to cast a command as a string (so that it can become a title).
> 
> Thanks.
> 
> Bruce
> 
Hi Bruce,

to avoid automatic evaluation of the elements of X, they should be
strings or of type HoldForm[]:

X = {"Cycle @ 4", "CompleteGraph @ 5"};
ShowGraph[ToExpression[#],
  PlotLabel -> StyleForm[#, FontSize -> 16]]& /@ X;

will show you the desired result.

-- 
Peter Pein
Berlin


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