Re: Fixed Time Step for NDSolve
- To: mathgroup at smc.vnet.net
- Subject: [mg23032] Re: Fixed Time Step for NDSolve
- From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
- Date: Thu, 13 Apr 2000 02:43:21 -0400 (EDT)
- Organization: Universitaet Leipzig
- References: <8d0ri8$57o@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Hi, probably not. I would not advice to remove the step size control. Typical a inital value solver with constant steps take more steps and accumulate more rounding errors than a solver with stepsize control. You can still use the InterpolationFunction[] that comes out form NDSolve[] to create a table of data with constant increment. Or you may have a look into the ProgrammingInMathematica`RungeKutta.m package that make a constant stepsize integration. Regards Jens jim_greer at my-deja.com wrote: > > Is there any way to "trick" Mathematica into using a fixed time step > over an interval of time for NDSolve? I've tried various combinations > of parameters on step size with no success. > > Jim Greer > Dept of Engrng Mech > U.S. Air Force Academy > > Sent via Deja.com http://www.deja.com/ > Before you buy.