Re: [Pyode-user] effect of start time on ode physics

[chris <dra...@gm...>]

Hi list,

We have discussed the effect of position on simulation accuracy in
pyode but no one has answered this riddle about the start time, anyone
have an answer?

regards,

chris


On 11/24/06, chris <dra...@gm...> wrote:
> Hi,
>
> I have been doing some experiments as part of my phd and, tho the
> theory predicts some differences in physics results, it was still
> surprising to see it in actuality. the following differ only in the
> start time (the second has a start time of 8000), but the final
> resting place of the RH block is quite different from its position
> when running the first example, even tho the spatial positions, size
> of everything, duration of sim and grav constant are the same.
>
> http://www.planet-earth.org/pyode/preciseBlocks.py
> http://www.planet-earth.org/pyode/preciseBlocksTime8000.py
>
> Can anyone explain to me what is happening inside ode to produce these
> different results? I can explain the results abstractly, but not in
> detailed terms relating to the specifics of pyode.
>
> thanks,
>
> chris
>