Re: Plot, Epilog, and Text
- To: mathgroup at smc.vnet.net
- Subject: [mg80814] Re: Plot, Epilog, and Text
- From: Szabolcs <szhorvat at gmail.com>
- Date: Mon, 3 Sep 2007 06:08:29 -0400 (EDT)
- Organization: University of Bergen
- References: <fbdmo6$pat$1@smc.twtelecom.net>
Bruce Colletti 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 a Real, but an Integer, so g["X",3,f] does not match
g[X_String, w_Real, f_]. Just use g[x_String, w_?NumericQ, f_] in the
function definition.
Szabolcs