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MathGroup Archive 2005

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Re: ContourPlot3D and mapping

  • To: mathgroup at
  • Subject: [mg55205] Re: ContourPlot3D and mapping
  • From: "Peltio" <peltio at>
  • Date: Wed, 16 Mar 2005 05:36:51 -0500 (EST)
  • References: <d0p8ch$j8c$> <d0rp54$2hh$> <d0u75t$koe$>
  • Reply-to: "Peltio" <peltioNOSPAM at>
  • Sender: owner-wri-mathgroup at

u wrote

>>     Polygon[p_] :> Block[{r = Mean[p]}, {f[r], Polygon[p]}]

>and got the error message:

You don't have Mean defined in your system. Either define it yourself
    Mean[x_List] := (Plus @@ x)/Length[x]
or load one of the statistics packages that define it.

Mean was added to the kernel starting from version 5 I think.

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