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Re: AbsoluteOptions and NDSolve

  • To: mathgroup at smc.vnet.net
  • Subject: [mg123885] Re: AbsoluteOptions and NDSolve
  • From: DrMajorBob <btreat1 at austin.rr.com>
  • Date: Wed, 28 Dec 2011 05:15:38 -0500 (EST)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • References: <201112262230.RAA20909@smc.vnet.net>
  • Reply-to: drmajorbob at yahoo.com

> Isn't there a way to fetch absolute options from NDSolve?

No, and I don't see why you'd want to or what you expect from it.

So far as I can see, AbsoluteOptions works on graphics and notebooks, both  
of which may have embedded options you didn't manually set.

I don't think that applies to NDSolve results, which are  
InterpolatingFunction objects.

Bobby

On Mon, 26 Dec 2011 16:30:04 -0600, Snark <gadior at gmail.com> wrote:

> Hi,
>
> I am perplexed by the behavior of AbsoluteOptions on NDSolve. I tried
> getting the actual value of StartingStepSize and got something weird.
>
> In[]:= AbsoluteOptions[NDSolve[eqSys, {c[x, t], T[x, t]}, {x, 0, xb},
> {t, 0,1}]],StartingStepSize]
> Out[]:= {{AbsoluteOptions[c[x,t]->InterpolatingFunction[{{0.,5.*10^-6},
> {0.,1.}},<>][x,t],StartingStepSize],AbsoluteOptions[T[x,t]-
>> InterpolatingFunction[{{0.,5.*10^-6},{0.,1.}},<>]
> [x,t],StartingStepSize]}}
>
> Isn't there a way to fetch absolute options from NDSolve?
>
> Thanks in advance
>
>


-- 
DrMajorBob at yahoo.com



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