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MathGroup Archive 1995

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Re: Bug in Mma 2.2.2 for Windows?

  • To: mathgroup at christensen.cybernetics.net
  • Subject: [mg1636] Re: [mg1591] Bug in Mma 2.2.2 for Windows?
  • From: John Fultz <jfultz>
  • Date: Sat, 8 Jul 1995 02:55:26 -0400

> I am just porting notebooks I've written under Mac OS and Unix to Mma for 
> Windows and think I've run into a bug in Mma 2.2.2 for Windows:
> 
> Trying to use the package PlotField invariably ends in a total system crash
>  (  floating point error: invalid ), not only in my own notebooks, but even 
> using the examples in PlotFiel.m ( either the second or the third one ).
> 
> Is this just limited to the student version ( it works just fine in Mma 2.1 
> Win, which usually is much more crash prone ?
> 
> If it's just 2.2.2, when will I be able to get an upgrade ( should have been 
> out last month, but I havn't seem any reaching Germany yet) ?
> 
> 
> Any help would be appreciated
> 
> 
> Lars Hohmuth
> Sekt Kernspinresonanz
> Universitat Ulm
> Germany

If you're using the student version for Windows, then you are using
Mathematica 2.2.1, not Mathematica 2.2.2 (no 2.2.2 version exists for
students).  In this case, your problem makes sense.  Mathematica 2.2.1
had some inefficiencies in the way arrows were drawn; the resulting
PlotField graphics often used up memory space allotted for rendering.
You can fix this by obtaining from mathsource
(ftp://mathsource.wri.com, http://www.wri.com/mathsource/):

/Enhancements/Graphics/2D/0206-424/WinArrow.m

If you're using the 2.2.2 professional version, then you should already
have this fix.  If this is the case, then you should send in examples
of failed PlotFields along with your license number to support at wri.com,
Wolfram's e-mail support address.  They can determine what the problem
might be.

John Fultz
Wolfram Research, Inc.


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