Hello OpenSim Community, I am trying to implement inverse dynamics in Python. I am using the full body model developed by Rajagopal and their dataset from which I am taking the kinematics and the GRF. So below is the code I use to run ID import opensim as osim mydata = pd.read_excel("ik_output_walk....

Hello, I am working on the full body model developed by Rajagopal et al. I have locked all DoFs except the elbow and shoulder DoFs. However when I calculate the moments using the ID solver in my python code, I do not get elbow and shoulder moments large enough to follow the desired kinematics. Kindl...

Hello, I have implemented force velocity multiplier of Thelen muscle model referring to both Complete description by Chand John and the updated code Thelen2003Muscle.cpp: https://github.com/opensim-org/opensim-core/blob/2fc6dc1d23734f3b5f8d58c3b3833871e756c675/OpenSim/Actuators/Thelen2003Muscle.cpp ...

Hi, I am calculating Inverse Dynamics torque at the elbow using the Opensim ID solver and then using this torque to calculate the muscle activations in arm26 model using a python script. I then calculate the FD torque (summing up both active and passive muscles torque), however the torques from ID a...

Thank you, Samuele and Ayman for your replies. Much appreciate your help.

Regards,
Shivangi

Thank you, Ayman for your reply.

Regards,
Shivangi

Hello, OpenSim indexes start from 0 whereas MATLAB's start from 1, however in the examples provided with OpenSim package (like createActuatorsFile.m), the index starts from 0. Kindly let me know how to achieve this. Because whenever I start indexing with 0 in my MATLAB code usign OpenSim libraries I...

Hello Elena,
were you able to solve your issue?

Regards,
Shivangi

Hello, I am passing the current state of the model into a function to get updated after integration using the Manager. However when I get the updated state being called in the consecutive part of the main code, MATLAB crashes. Should I create a handle to the state before passing it into a child func...

Hello, I have a MATLAB code that takes 12 mins to execute. I have to reduce it to less than a minute. However, I am not sure which parallel computing technique is compatible with OpenSim. Since the integration in the manager takes 80% of the execution time, I was thinking if I can pass this part of ...