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Re: exclusions

  • To: mathgroup at smc.vnet.net
  • Subject: [mg86364] Re: [mg86338] exclusions
  • From: "Curtis F. Osterhoudt" <cfo at lanl.gov>
  • Date: Sun, 9 Mar 2008 05:04:51 -0500 (EST)
  • References: <200803081046.FAA13672@smc.vnet.net>
  • Reply-to: cfo at lanl.gov

  Not sure. On Win XP (6.0.0) I could get 1 as an exclusion if I did
something like Exclusions ->1.5 (or something close). Then I noticed it
wasn't Red (or any other ExclusionsStyle). THEN I noticed that if I used
"Exclusions -> None", the asymptote still showed up. Bug?

   Hm. I've just noticed that the Tan[x] function is working correctly,
but the x/Log[x] one is wonky. Sometimes it works (if I put
Exclusions->{1} it seems to "reset").

          C.O.

> Hello!
>
> Does somebody understand why this works fine :
>
> Plot[Tan[x], {x, 0, Pi},
>    Exclusions -> Pi/2,
>    ExclusionsStyle -> Red]
>
> (I obtain a red asymptote)
>
> And this doesn't work like I logically expect?
>
> Plot[x/Log[x], {x, 0, 10},
>    PlotRange -> {-5, 10},
>    Exclusions -> 1,
>    ExclusionsStyle -> Red]
>
> (I obtain no asymptote at all)
>
> $Version
>
> "6.0 for Microsoft Windows (32-bit) (June 19, 2007)"
>
> Thank's for all feedback.
>
> Florian Jaccard
>
>
>



  • References:
    • exclusions
      • From: "Jaccard Florian" <Florian.Jaccard@he-arc.ch>
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