Re: NDSolve Interpolating Function Range too small!
- To: mathgroup at smc.vnet.net
- Subject: [mg26351] Re: [mg26344] NDSolve Interpolating Function Range too small!
- From: Reza Malek-Madani <research at usna.edu>
- Date: Wed, 13 Dec 2000 02:41:13 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
I would imagine you are hitting a singularity at 10^(-30) if Mathematica is not giving you other warnings. If you send me the equations, I would be happy to play with them and report back what I find. Reza. ------------------------------------------------------------------------- Reza Malek-Madani Director of Research Research Office, MS 10m Phone: 410-293-2504 (FAX -2507) 589 McNair Road DSN: 281-2504 U.S. Naval Academy Nimitz Room 17 in ERC Annapolis MD 21402-5031 Email: research at usna.edu -------------------------------------------------------------------------- On Tue, 12 Dec 2000 flashboltzmann at my-deja.com wrote: > I'm using NDSolve to numerically solve three very complicated second > order differential equation. When NDSolve does the calculation though > the interpolating function always has a range in the 10^-30 something > range. This is useless when I try to plot the solutions to the equation > because I need it on a range of up to 100. How do I tweak mathematica > (or my equation) to get a decent range from the interpolating function? > Also, when I am plotting is there any way to tell mathematica not to > extrapolate a solution if it hits an undefined point? > > > Sent via Deja.com http://www.deja.com/ > Before you buy. > >