Services & Resources / Wolfram Forums / MathGroup Archive
-----

MathGroup Archive 2010

[Date Index] [Thread Index] [Author Index]

Search the Archive

NDSolve - how to bypass safety chceck?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg111291] NDSolve - how to bypass safety chceck?
  • From: "slawek" <slawek at host.pl>
  • Date: Mon, 26 Jul 2010 06:39:03 -0400 (EDT)

I have got an DDE/ODE equation: for parameter d < 0.8 the solutions are 
non-chaotic, for d > 0.9 the solutions are chaotic.

Mathematica NDSolve works fine for d < 0.8 .

The problem is NDSolve has got a kind of "safety chceck" - for d > 0.9 it 
gives a warning "Maximum number of  ... steps reached at the point" - and 
gives no solution. I want to bypass the checking - and turn NDSolve to a 
dumb routine which gives any noise solution just to show that the solution 
is noisy, chaotic and so on.

Obviously, it would be possible to use any programing language to implement 
an naive integration scheme. But I would like use an option in NDSolve, to 
avoid the change of the environment.

Any suggestions, please?

slawek
 



  • Prev by Date: Re: A Question About Directive
  • Next by Date: Re: de-nesting complex nested lists
  • Previous by thread: Re: Need to align data from sublists to Union of dates
  • Next by thread: Re: NDSolve - how to bypass safety chceck?