I could successfully change scaling factors according to your advice. Thank you!

Hello, I would be grateful if someone could tell me how to change manual scale factors using MATLAB and OpenSim 4.0. I would like to systematically change manual scaling factors defined in a ScaleTool object (below is the corresponding part in an .xml file) to generate models with different knee hei...

Thank you for your explanation and providing me with the latest documentation.
After scanning the Simbody theory manual, I found some useful information in the section 10.

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I found more detailed information on the optimizer defined in Assembler.cpp at https://github.com/simbody

Hello, I would like to know how state variables are modified in the assemble () function. As far as I can see from the Documentation and Assembler.h (https://simtk.org/api_docs/simbody/3.5/classSimTK_1_1Assembler.html), the specific mathematical method other than the cost function is not described. ...

As you supposed, this problem was caused by the incorrect definition of the path.
I deeply apologize my missing your reply.

Yes, the coordinates are dependent in my model. I could verify the crank angle was set to the specified one by adding the third argument of Coordinate::setValue() method as you adviced, though I should keep an eye on other coordinates. Your advice gave me a better understanding of the assembler. Tha...

Hi, For my self-learning, I am trying to perform forward kinematic analysis using a simple cycling model recently uploaded on the web. My first goal is to get the trajectries of hip and knee angles during a pedaling cycle (0 to360 degrees) by scripting (with GUI or MATLAB). The system has more than ...

Thank you for the reply. Then I will check if there's any problem about the tracking accuracy just in case.

Best regards,
Yusuke Okita

Hello, I thought the time step during RRA is constant (typically 0.001). However, I incidentally found an RRA output where time step were not constant during the analysis: time ... 0.48 0.4808624 0.481 0.4818624 0.482 0.4828624 0.483 0.4838624 0.484 0.485 ... I would be grateful if someone could tel...

Hello Yann, Did you try to convert .csv to .trc manually? Compared with converting kinetic data to a .mot file, marker trajectories would be easier to manipulate. If you do this kind of work many times. writing a script (e.g. MATLAB) for converting files can be considered. You might find Lee-son too...