Dear Dr Uchida,
I changed the lab coordinates to the model coordinates using the rotational transformations. The simulations worked fine. However, I am unable to resolve the residuals at the double limb support stages. Do you have any suggestions for this?
Thank you.

Thank you for the response, Dr Uchida. I now realize that it's because of different coordinate frame of reference. The ground reaction force measurements are in z-direction instead of usual y-direction. I was using the Grand Challenge 4 data. So,during RRA, I change the gravity to z-axis and then ru...

Even though I am able to get my residual forces and torques within the limit as stated by the Opensim developers, I am unable to get 0 mass change.I am using the '2015 Full Body Musculoskeletal Model by Rajgopala' and 'ipopt' algorithm. This what I am getting. * Recommended mass adjustments: * Total...

Is there any repository to access the ground reaction and marker trajectory data of a post-stroke patient?