Hi. I wanted to use BOPS https://simtk.org/projects/bops for running Inverse Kinematics and plot the results against % of gait cycle. However the script was developed for OpenSim 3.3 and there are some compatibility issues with 4.x versions. This is the error I get: Incorrect number or types of inpu...

Hi, I am trying to achieve the same thing with associating joint angles with % of gait cycle and calculating the mean of several trials. How one would go about it in MATLAB? Are there any existing scripts that can do this or do we have to write our own from ground up?

Kind regards

Hello, Basically BOPS tool is meant to batch process all the trials for one subject and then plot the results. It can do this for IK, MA, ID, SO and JRA. It works in OpenSim 3.3 for me with no issues. https://www.tandfonline.com/doi/abs/10.1080/10255842.2020.1867978?journalCode=gcmb20 - in this pape...

Hi. I wanted to use BOPS script for batch processing Inverse Kinematics. But this script was developed for 3.3 API and in 4.x versions of opensim there are these types of errors: Error in getJointDofs (line 29) coordinateSet = osimJoint.getCoordinateSet(); Error in getDofsFromModel (line 41) jointDo...

Hello. I am trying to open a model (https://simtk.org/frs/?group_id=2092) in OpenSim 3.3 - there is an information that it is compatible with OpenSim 3.3, but it doesn't open and I get this error: Coordinate coupler: unknown independent coordinate knee_angle_r or Invalid coordinate (knee_angle) spec...

Hi. Thank you for the response. I was able to use this multisegmental model to create Oxford foot model. It works great in OpenSim 4.x. However BOPS, the script I want to use to batch process IK, is only compatible with OpenSim 3.3. And there is the issue. This model - https://simtk.org/frs/?group_i...

I have attached two files, the "not working" one gives me the error message. These are .trc files, but had to change extension to share them here.
If you could tell me what is the problem that would mean a world to me.

I can't use some of my files in opensim, because when I try to open them to scale the model or for inverse kinematics I get the "unable to open marker file" error. Preview the experimental data also doesn't work for those files. But the rest of files (more than half) work with no problem. All data w...