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MathGroup Archive 1997

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Re: More: tantamount error messages when interupting

  • To: mathgroup at smc.vnet.net
  • Subject: [mg8636] Re: [mg8607] More: tantamount error messages when interupting
  • From: "Steve Chesley" <chesley at chaos.ae.utexas.edu>
  • Date: Fri, 12 Sep 1997 04:10:49 -0400
  • Sender: owner-wri-mathgroup at wolfram.com

I saw your first message and have been watching hopefully for an
explanation or fix for this very annoying behavior. Doesn't anyone
(i.e., WRI) have a suggestion or fix? It should be clear that having
to quit the kernel because of a syntax error is unacceptable
performance. 

Steve Chesley
chesley at chaos.ae.utexas.edu

----------
> From: K. Nikolaj Berntsen <knb at _nospam_bkm.dtu.dk>
To: mathgroup at smc.vnet.net
> To: mathgroup at smc.vnet.net
> Subject: [mg8636] [mg8607] More: tantamount error messages when interupting
> Date: Tuesday, September 09, 1997 2:07 AM
> 
> Some time time ago I posted a question without the documentation,
there
> was one response with an answer I wasn't looking for (but thanks
> anyway). Now I have reproduced the error without crashing
mathematica,
> so here goes again, with documentation.
> 
> I have the annoying problem, that once in a while when I interrupt
a
> calculation with <alt>+<.> MMA3.0 start splurting out error
messages in
> the messages window: 
> 
> For example I input the following (whre c[i,j] is an array of not
so
> nice functions):
> 
> In[]:  	NullSpace[Table[c[i,j][[1]],{i,1,8},{j,1,8}]
> 	/.c[1]->.4,c[2]->.3,c[3]->.2, c[4]->-.5]
> 
> Where I had forgotten the braces about the replacement rules.
Hitting
> "evaluate" I got the first error message:
> 
> NullSpace::"optrs": 
>     "Option specification \!\(\(c[4]\) \\[Rule]
\(-\*StyleBox[\"0.5`\",
> \
> Rule[PrintPrecision, 1], Rule[StyleBoxAutoDelete, True]]\)\) in \
> \!\(NullSpace[\(\\[LeftSkeleton] 1 \\[RightSkeleton]\)]\) is not a
rule
> for a \
> symbol."
> 
> Realising my error I hit <alt> + <.>, then, in the messages I got
loads
> of messages like (in the messages window):
> 
> Front End Message
> An unknown box name (Rational) was sent as the BoxForm for the
> expression. Check the format rules for the expression.
> Front End Message
> An unknown box name (Power) was sent as the BoxForm for the
expression.
> Check the format rules for the expression.
> 
> Front End Message
> An unknown box name (c) was sent as the BoxForm for the expression.
> Check the format rules for the expression.
> 
> Front End Message
> An unknown box name (Times) was sent as the BoxForm for the
expression.
> Check the format rules for the expression.
> 
> Obviously I do not care about this message and just want to correct
my
> typo without having to wait for mathematica to finish its messages.
> 
> It can take literally hours on a pentium 150 to finish, it can even
> crash mathematica (linux does not crash :-)
> 
> Is there a way to turn off the messages? Can I get of this annoying
> feature by upgrading to 3.01?
> 
> Happy computing,
> Nikolaj
> -- 
> --------------------------------------------------------------
> | Ph.D. stud., cand.scient.				     |
> | K. Nikolaj Berntsen					     |
> | Office: Department of Structural Engineering and Materials |
> |	  Technical University of Denmark		     |
> |	  Building 118, room 152			     |
> |	  DK-2800 Lyngby				     |
> |	  Tel +45 4525 1769				     |
> |	  Fax +45 4588 3282				     |
> | URL:	  http://www.bkm.dtu.dk/~knb                         |
> | 	  http://www.nbi.dk/~berntsen                        |
> -------------------------------------------------------------|


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