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MathGroup Archive 2007

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Re: Plot, Epilog, and Text

  • To: mathgroup at smc.vnet.net
  • Subject: [mg80813] Re: Plot, Epilog, and Text
  • From: Ray Koopman <koopman at sfu.ca>
  • Date: Mon, 3 Sep 2007 06:07:59 -0400 (EDT)
  • References: <fbdmo6$pat$1@smc.twtelecom.net>

On Sep 1, 11:55 pm, Bruce Colletti <vze26... at verizon.net> wrote:
> Re 6.0.1 under WinXP.
>
> Why does the first Plot fail but not the second?
>
> They seem equivalent:  the former simply uses a function to implement the Text command that is explicit in the second Plot.
>
> Thankx.
>
> Bruce
>
> f=PDF[NormalDistribution[3,Sqrt[6]],x];
> g[X_String,w_Real,f_]:=Text[Style[X,12,Bold],{w,f/.{x->w}},{0,-2}];
>
> Clear@x;
> Plot[f,{x,-40,40},PlotRange->All,Epilog->{g["X",3,f]}]
>
> Plot[f,{x,-40,40},PlotRange->All,Epilog->{Text[Style["X",12,Bold],{3,f/.{x->3}}]}]

3 is not Real. The easiest fix is to use plain w_ instead of w_Real
in the definition of g.



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