I want to complete a new upper limb model including clavicle and scapular movement based on exiting upper limb model, but I have the problem of determining the geometry path points of new muscles. I know the origin and end points of each muscle, but I don't know how to locate them on the model accur...

Okay! I'll tell you if I start the work and may bother you someday.

Best wishes!
Lixin

Hello Sherm! I majored in software engineering, so programming language is not the most stressful thing. But I want to make OpenSim use our data first with OpenSim, which is my current mission that my mentor asks me to do. Anyway, I'll go deeper along this clue later. Thanks again! Best wishes! Lixi...

Hello Sherm!
Thank you for your advice! You've provide me with a new clue.
Do you mean that if I want to use the extensive Quaternion methods, I have to write my own OpenSim software or a plugin?

Best wishes!
Lixin Sun

Hello James! I misunderstood the meaning of "report this post" and report your reply with my reply. I'm really sorry if you receive some notification. Anyway, thanks a lot for your sweet replies! When I'm studying the rotations of upper limbs this morning, I find there is a body called "radius" belo...

Hello, everyone! I want to use ID tool with my mocap data, which is a bunch of quaternions of each joints in the upper limb. After checking the .mot file, I need to change the quaternions into euler angles. As I read the .osim file of the upperlimb model, DynamicArms2013, I find that there's only on...

Hi Jim, I think your problem is not about less markers, because the marker file you import must follow what your model has defined as landmarkers. You can refer to the tutorials published with your OpenSim installation. Furthermore, I think you have blurred the concepts of "joints" and "markers". Jo...

Hello James!
Thank you for your answers!
I'm appreciate it for the links you have posted, it really do help. I think I have missed some part in learning OpenSim and I'll follow the templates to write my own files.

Best regards,
Lixin Sun

Editing OpenSIm model is just like I know the type of function parameters, but I don't exactly what kind of arguments I should deliver. Are there any standard documents like MSDN?

Hello everyone! I have a problem in using OpenSim tools, I'm not even sure if I can use OpenSim to do my research! Our lab use the wearable motion capture device to capture human movement, so we don't have marker files.Can I use OpenSim? In fact, I'm trying using OpenSim and have decided to begin fr...