Re: Exceptions Style Problem

• To: mathgroup at smc.vnet.net
• Subject: [mg86733] Re: Exceptions Style Problem
• From: "David Park" <djmpark at comcast.net>
• Date: Thu, 20 Mar 2008 02:50:23 -0500 (EST)
• References: <frqpkk\$4ru\$1@smc.vnet.net>

```Gary,

This is a little trip wire that WRI has inadvertently left in the path and
almost everyone trips over it. Either it is a bug or it is a feature that
needs clearer explanation in the documentation. Basically you have to use
the equation form of Exclusions to make it work correctly.

folium[t_] := {3 t/(1 + t^3), 3 t^2/(1 + t^3)};

ParametricPlot[folium[t], {t, -30, 30},
PlotRange -> {{-3, 3}, {-3, 3}},
PlotStyle -> Black,
ExclusionsStyle -> Blue,
Exclusions -> {t == -1}]

--
David Park
djmpark at comcast.net
http://home.comcast.net/~djmpark/

"WetBlanket" <Wyvern864 at gmail.com> wrote in message
news:frqpkk\$4ru\$1 at smc.vnet.net...
>I generated a plot using this code:
>
> folium[t_]:={3t/(1+t^3),3t^2/(1+t^3)};
>
> y1=ParametricPlot[folium[t],{t,-30,30},PlotRange->{{-3,3},{-3,3}}]
>
> It was a nice folium with the asymptote displayed.
>
> Next I plotted
>
> y1= ParametricPlot[folium[t], {t,-30,30},PlotRange->{{-3,3},
> {-3,3}},Exclusions->-1 ]
>
> As expected this gave me the folium without the asymptote displayed.
>
> Finally, I plotted
>
> y1= ParametricPlot[folium[t], {t,-30,30},PlotRange->{{-3,3},{-3,3}}
> ,ExclusionsStyle->Blue,Exclusions->-1]
>
> I expected to see the asymptote displayed in Blue, since the
> documentation for ExclusionsStyle says, "ExclusionsStyle is an option
> to plotting functions that specifies how to render subregions excluded
> according to Exclusions."
>
> But, instead I get the folium without the asymptote displayed.
>
> Can anyone help me understand what I am missing?
>
> Thanks
>
> Gary Boswell
>

```

• Prev by Date: Re: Creating a function that is a derivative of another function??
• Next by Date: Re: Find roots in a limited interval
• Previous by thread: Exceptions Style Problem
• Next by thread: Re: Exceptions Style Problem