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MathGroup Archive 1996

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Re: error message

  • To: mathgroup at smc.vnet.net
  • Subject: [mg5152] Re: error message
  • From: haberndt at dnai.com (Harald Berndt)
  • Date: Wed, 6 Nov 1996 01:33:32 -0500
  • Organization: DNAI ( Direct Network Access )
  • Sender: owner-wri-mathgroup at wolfram.com

In article <54kal9$d6r at dragonfly.wolfram.com>, gt1824a at prism.gatech.edu
(Heather Mary Hauser) wrote:

> [ ... some stuff cut ... ]
> "FindRoot::frnum:Function{{-0.00004794 - 0.000020387I}} is not a length 1
> list of numbers at {r} = {0.15I}" .
> [ ... more stuff cut ... ]

I'd need to see more of the definition of the function to find out what's
wrong, but clearly
  
   {{-0.00004794 - 0.000020387I}}

is not a length 1 list of numbers, but a list of length 1 of lists of
length 1 (the double braces). For some reason, your function returns a
list of results. Use Flatten[] or First[] somewhere to get to {-0.00004794
- 0.000020387I}.

-- 
Harald Berndt, Ph.D.                            Research Specialist,
Voice: 510-652-5974                                      Consultant
FAX:   510-215-4299


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