Okay thank you!

Hello, I am interested in using the geometry files of the Generation 1 Open Knee model. I am curious how the cut planes were defined for both the femur and the tibia. Are they perpindicular to the mechanical axis of the bones? Or are they arbitrary and made during the segmentation of the MRI scans? ...

Hi Thomas, Yes I am referring to inverse kinematics. To give some context, I am attempting to compare OpenSim joint angles to those calculated using the typical method of anatomical coordinate frames. I believe my confusion is coming from determining what would cause differences between the weighted...

Hello, I have a few questions in regards to how joint angles are calculated in OpenSim. I have looked through the SimTK theory manual but still have some confusion. 1. What method is used to calculate joint angles? Is it quaternions, Euler Angles, or another method? 2. If Euler angles are used how c...

Hello,
I am interested in modifying/creating new models and am curious about how the piecewise linear function constants are determined for different joint constraints. Are there any resources that would help explain where these constants are coming from?
Thanks,

Hello, I am currently modifying a custom model which only utilized one side of a sheep pelvis. I have mirrored the geometry of the original pelvis to create a single full pelvis geometry file. My question involves the modification of the inertia matrix to account for the change in dynamics as the pe...

Hi Ayman,
Yes, removing the specific file path on the output_gen_force_file did the trick.
Thanks

Hello, I am attempting to setup the inverse dynamics tool via python to run ID on multiple models and trials. I have gotten the inverse dynamics tool to run as I receive a 'True' when using the run() method. However, I am not seeing any .sto file being created despite having the results directory an...

Hello, I am running inverse dynamics and have 4 force plates that were used during data collection. I would like to specify a time range for each individual force plate. For example, if my trial is 4 seconds long, I would like force plate #1 to be used for the entirety of the trial, but only use dat...

Update: I ended up just writing a custom script to rotate my trc files.