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InterpolatingFunction

  • To: mathgroup at smc.vnet.net
  • Subject: [mg16375] InterpolatingFunction
  • From: Virgil Stokes <virgil.stokes at neuro.ki.se>
  • Date: Thu, 11 Mar 1999 02:16:47 -0500
  • Organization: Boston University
  • Sender: owner-wri-mathgroup at wolfram.com

I have a nonlinear ODE that I solve numerically with NDSolve and
this of course uses InterpolatingFunction.

Example:

 Sol = NDSolve[ {LEE[[1]], LEE[[2]],\[Theta]1[0]==\[Theta]10,
      \[Theta]1'[0]==\[Theta]1d0, \[Theta]2[0]==\[Theta]20,
      \[Theta]2'[0]==\[Theta]2d0}, q,{t,0,tfinal}, AccuracyGoal->18,
    PrecisionGoal->18,
                                  WorkingPrecision->36,
    MaxSteps->Infinity] (* Forward dynamics *)

{{\[Theta]1[t]
        \[Rule]InterpolatingFunction[{{0,
              2.00000000000000000000000000000000000}},"<>"][t],
    \[Theta]2[t]
        \[Rule]InterpolatingFunction[{{0,
              2.00000000000000000000000000000000000}},"<>"][t]}}

** How can I obtain the complete list of domain values used (all t values)
     by the InterpolatingFunction?

-- V. Stokes




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