Re: [Pyode-user] dependence upon position?

[Matthias B. <ba...@ir...>]

chris wrote:
> FYI, I get this error for all versions where I set CFP and ERP to 0,
> including 10, 1000 and 10000 from the origin. For example look at the
> attached and see the difference in rest position,

When CFM and ERP are both 0 I get the LCP error in every step. I think 
an ERP of 0 doesn't make any sense anyway, does it? I wonder why the 
collision is resolved at all. Doesn't ERP=0 mean that the joint force 
isn't taken into account at all?
Similarly, I also wouldn't recommend a CFM value of exactly 0 (see the 
ODE manual: "In fact, if the system is mis-behaving, one of the first 
things to try is to increase the global CFM.")

By the way, as was mentioned in a previous mail, if you switch to 
quickStep() there's no error message anymore (but the movement is not 
identical anyway).

Anyway, as these things happen right inside ODE and are not particular 
to PyODE I recommend to post a message in the ODE mailing list.

- Matthias -