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Re: Plotting singularities

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  • Subject: [mg116963] Re: Plotting singularities
  • From: Murray Eisenberg <murray at>
  • Date: Sun, 6 Mar 2011 05:40:56 -0500 (EST)

If I copy that same example Plot[Tan[x], {x, -3, 3}] form the Basic
Plotting page in the Documentation Center and evaluate the cell in a new
notebook -- or even if I evaluate it in place in the Documentation
Center page -- then I get exactly what you expect, namely, no error
message.  (Mathematica 8.0.0, Windows XP.)

On the other hand, you do get the spurious vertical segments at the
asymptotes. to avoid those, include the option:

   Exclusions -> {-Pi/2, Pi/2}

On 3/5/2011 6:08 AM, J=F6rg Schr=F6der wrote:
> Dear Group,
> how can I omit to plot singularities, for example in Tan[x] in Version 8? It
> seems, that something has changed since Version 7. When I copy the example
> from the Documentation Center (Basic Plotting) Version 8 shows an error
> message.
> J. Schroder

Murray Eisenberg                     murray at
Mathematics & Statistics Dept.
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University of Massachusetts                413 545-2859 (W)
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Amherst, MA 01003-9305

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