Hi Ernesto, The MocoContactTrackingGoal only minimises the (projected) force error. It does not track the COP nor the torques. See here: https://opensim-org.github.io/opensim-moco-site/docs/0.4.0/class_open_sim_1_1_moco_contact_tracking_goal.html The zeros in the referenceGRF.sto make sense as that ...

Hi Nick, Thank you for your reply. I tried to formulate such a custom MocoGoal to regularise MocoParameters. Generally the problem set up is as follows: % Construct the MocoInverse inverse = MocoInverse(); modelProcessor = ModelProcessor(model); inverse.setModel(modelProcessor); % initialise Moco St...

Hi Nick, Thank you for your clarification! Good to know that muscle parameter tuning (i.e., optimal fibre length or tendon slack length) in this way is also not yet possible in Moco, which would have been my next step. I assume this means that it is currently only possible in the the Muscle Redundan...

Hi everyone, I am trying to optimise the contact model, and especially the contact radii of my contact spheres and the stiffness of the SmoothSphereHalfSpaceForce, based on GRF and kinematic data. I use MocoInverse to prescribe my kinematics and a MocoContactTrackingGoal to track my GRF data. I curr...

You will need to install the maci64 version of Matlab. Apple Silicon is not yet supported, see here: viewtopicPhpbb.php?f=91&t=17519&p=0&sta ... a8c7e5d16e

Hi everyone, I am trying to simplify a model in OpenSim 4.5 by combining and/or deleting some muscles. In the process I want to remove wrap objects that are still in the model but no longer used, as the muscles, which used to referenced them, got deleted. Rather than deleting them manually in a text...

Update: I installed MATLAB R2023b Update 6 (maci64), which I can run with Rosetta 2. This allowed me to successfully link it with OpenSim through the MATLAB API. It was definitley an issue with the initial MATLAB version being arm64 causing the architecture mismatch. Are there plans to include Appl...

Hi everyone, I am trying to configure and set up the OpenSim API in MATLAB on my new MacBook which has an Apple Silicon M2 Pro chip. I am running Matlab R2023b Update 3 (64-bit maca64) and have both OpenSim 4.4 and 4.5 (2024-01-10-3b63585) versions installed. When I run the configureOpenSim.m for ei...