Re: Error Tracing - NDSolve
- To: mathgroup at smc.vnet.net
- Subject: [mg4086] Re: Error Tracing - NDSolve
- From: wagner at motel6.cs.colorado.edu (Dave Wagner)
- Date: Fri, 31 May 1996 01:36:22 -0400
- Organization: University of Colorado, Boulder
- Sender: owner-wri-mathgroup at wolfram.com
In article <4obg9e$na9 at dragonfly.wolfram.com>,
Andrei Constantinescu <constant at athena.polytechnique.fr> wrote:
>
> Hi,
>
>is there any possibility in tracing an error in
>NDSolve ?
>
>I get the following message:
>
>In[2]:= sol = NDSolve[ Union[equation, condini] , {y1,y2,y3} , {t, 0., 20.},
> MaxSteps -> 2000 ]
>
> 1
>Power::infy: Infinite expression -- encountered.
> 0.
Try using:
Trace[NDSolve[your stuuff], Message, TraceAbove->True]
This may produce a horrible mess. If there's not enough information there,
try using TraceAbove->All. I'd be interested to know how well this
technique works for you.
Dave Wagner
Principia Consulting
(303) 786-8371
dbwagner at princon.com
http://www.princon.com/princon
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