During a deeper investigation of the problem, I came across the following error: - I build the debug version of OpenSim from Scratch (latest master and the included muscle model) - when I set up a Static Optimization with the AnalyzeTool and the cpp API, this error message occurs: Assertion failed: ...

Hello OpenSim Team, we developed a new muscle model where the activation is not a State variable anymore but depending on the normalized Calcium concentration. After finishing this model, we tested it with some forward simulation. (Just simple excitation of the muscle) This forward simulation worked...

Hello Rahid, thanks for sharing your code it solved a similar problem with my Static Optimization code. In my Matlab API it generates a opensim.log file in the folder, from which I run the first OpenSim matlab script. This log file is then used, even if you execute another matlab OpenSim script loca...

Hello Samuele, many thanks for the detailed answer. I'm sorry, I didn't specify my problem accurately. I was trying to regenerate the results from Nejads et al.'s paper "The Capacity of Generic Musculoskeletal Simulations to Predict Knee Joint Loading Using the CAMS-Knee Datasets" https://link.sprin...

Hello Samuele,

did you find a solution for your problem yet? I'm currently struggeling with a similar issue regarding the AnalyzeTool and how to set additional force set files via Matlab.

Best,
Mike

Hello, thanks again for solving my last issue regarding a new muscle model plugin. Additionaly I try to generate a new wrapping algorithm, which was introduced by Hammer et al 2020 https://www.sciencedirect.com/science/article/abs/pii/S0025556418302542. I succeded to implement the algorithm in a sel...

Hello Ayman,

thanks a lot for clarifiying this to me. I will try your suggested solution.

Best,
Mike

Hi Ayman, thank you for your reply. Currently I'm trying to generate the plugin for the official released OpenSim 4.2 version. In the cmake gui I specify the spdlog_DIR variable to C:/OpenSim 4.2/sdk/spdlog/lib/spdlog/cmake . I still have several version of OpenSim (4.1 and self-build ones on my mac...

Thanks a lot for the answer. You are right, I selected the wrong mode. After building my plugin in Release mode I reduced the linker errors by half. Still I have another linker error telling me I have unresolved external symbols: Severity Code Description Project File Line Suppression State Error LN...

Hello, I'm trying to create a User plugin for OpenSim 4.2 for a new muscle model following this guideline: https://simtk-confluence.stanford.edu/display/OpenSim/Using+Plugins When I'm using Visual Studio 15 2017 with cmake to generate the project, the All Build stage stops in the Linker phase with t...