Thank you for the links.
I already saw them but will will have a look at them again.

Hi, I do not have all the OpenSim knowledge since I am a just a rare OpenSim user but here is my suggestion. I dont think there is a straightforward way to do it. You can use the ezc3d repo to read the c3d file in Matlab and extract the segment data: https://github.com/pyomeca/ezc3d Then you should ...

Hi OpenSim community, I am trying to use the Python API to perform the inverse kinematics and inverse dynamics analysis on a subject walking on force plates. I did manage to do the IK step so then I would like to perform the ID after that. But there are not a lot of examples or guidelines on how to ...

Hi Thomas,

Great. It was the issue.
I will add a note on our repository about that.

Thank you and have a great day

Vincent

Hi, First of all, happy new year. I am Vincent from Qualisys and I am trying to update our github repository to make it work with the OpenSim 4.4. I am having an issue with OpenSim 4.4 where the markers and the CoP are not aligned while they are aligned in OpenSim 4.2 and OpenSim 4.3. In all cases, ...

Hi Ayman,

Thank you for your reply.
I will start with that then.

Thank you

Hi,

I have been looking at the repo on github to see if I could find some examples of Inverse Dynamics to get some inspiration.
I was unable to find any but maybe it exists!

A link to one or more examples would be great.

Thank you

Vincent

Hi, I am trying to calculate the Jacobian between the marker and the coordinate of my model. I used CalculateStationJacobian to calculate the jacobian like that for each marker: const SimTK::MobilizedBodyIndex moBodyIndex = marker.getParentFrame().getMobilizedBodyIndex(); SimTK::Matrix Jm(3, mNbrU);...

Hi Ayman,

I used getLocationInGround instead which is the same as calcLocationInGround (that I could not call directly) and I got it to work.

Thanks for you help

Vincent

Hi gents, I am using the C++ API to update the coordinate values of my model (estimated previously by calling mInverseKinematicsSolver.track()) and then use computeCurrentMarkerLocations to get the new marker locations in the ground frame. Unfortunately, the values of the marker locations are not co...