By the way, OpenSim can be accessed in MATLAB via the scripting interface (see the "Scripting with Matlab" page in the Confluence documentation, https://simtk-confluence.stanford.edu:8443/display/OpenSim/Scripting+with+Matlab ), which may be smoother than using mex functions. Dear Thomas: Thank you...

What is the meaning of Model::getworkingstate() ? Please see the API documentation here: https://simtk.org/api_docs/opensim/api_docs/classOpenSim_1_1Model.html#a18e49f47403e7dd8aab6a2ebb8f8f7cc . In most cases, you can probably just hold onto the State returned by initSystem(): //C++ State& s = myM...

Dear All: Could I check with you just one question: Which of the ligaments in the patient's right lower limb, corresponding to the model file in the 4th-JW folder, were removed after the total hip and knee replacement surgery? Please kindly understand that, we are concerning about this since it may ...

Perhaps you're looking for the Induced Accelerations Analysis ( https://simtk.org/api_docs/opensim/api_docs/classOpenSim_1_1InducedAccelerations.html#details ). See this paper: Hamner, S.R., Delp, S.L. Muscle contributions to fore-aft and vertical body mass center accelerations over a range of runn...

Dear All:
Could anyone help with a question that, are there any methods using OpenSim API (or GUI) for the decomposition of the ground reaction force for each muscle ?

Thank you in advance!

Best regards
Jack

Please see the doxygen documentation for the setAxisNames() method: https://simtk.org/api_docs/opensim/api_docs/classOpenSim_1_1BodyScale.html#a43c97dfbb1823cf4eead291e27970a96 . The argument must be of type Array<std::string>. In MATLAB, you need to do something like the following: import org.open...

ERROR- a storage object containing the time histories of states was not specified. A states file was not provided ( https://github.com/opensim-org/opensim-core/blob/937e9387c93c327df466da56ee59696e4e0f3d57/OpenSim/Tools/AnalyzeTool.cpp#L469 ). The "setupAndRunAnalyzeBatchExample.m" example might be...

Dear All: When I try to use the MATLAB API AnalyzeTool, it prompts: ava exception occurred: java.io.IOException: analyzeTool.verifyControlsStates: ERROR- a storage object containing the time histories of states was not specified. at org.opensim.modeling.opensimModelJNI.AnalyzeTool_run__SWIG_0(Native...

When attemping static optimization from matlab using the AnalyzeTool approach described above I get the following error message: analyzeTool.verifyControlsStates: ERROR- a storage object containing the time histories of states was not specified. at org.opensim.modeling.opensimModelJNI.AnalyzeTool_r...

tkuchida wrote:Do you get the same exception if the code is run without being embedded in a mex function? It might help your debugging efforts to know whether the issue is specific to the mex function implementation.

Dear Tom:
Thanks so much for the reply, and I will go on try it accordingly.

Regards