Hi @mmmarinho!, I think that the same bug 62 (currently fixed in Matlab) is present in Python and C++. The pose_jacobian method of DQ_holonomicBase class returns a wrong Jacobian. Specifically, in the C++ implementation, the line 86 is wrong. Current: const double j73 = 0.25(xc - ys), but the right is: const double j73 = 0.25(-xc - ys).
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Cheers!
Juancho.