Re: [reactive] Status of Reactive "feedback" (recursive integral, etc)

3 Dec 2008


      I'm all for it :) If we manage to make a 4th order Runge Kutta, then all the
others would be easy to make too if they ever would be needed.
On Wed, Dec 3, 2008 at 5:22 PM, Creighton Hogg  wrote:
...
2008/12/3 Peter Verswyvelen :
...
Okay.
It would be nice to experiment with higher order integration techniques
too.
Right now Reactive uses Euler integration but the user should be able to
choose between Euler, Midpoint, Simpson (or whatever other quadrature
rule).
However, aren't we actually interested in approximating ordinary
differential equations (or more exactly, initial value problems), instead
of
using integral directly? In which case we should choose between 1-th,
2nd,
or 4th order Runge Kutta or something?
I'm not an expert here, but it would be nice to think about this I guess.
I think a 4th order Runge Kutta is something we'd want to have, maybe
as part of a FRP.Reactive.Physics package?