Hi everyone, I am now trying to write a custom goal for this objective and I have been able to do so by modifying the example in "opensim-moco-0.4.0-win\Resources\Code\CPP\Plugins\exampleMocoCustomEffortGoal" with the help from this forum post: https://simtk.org/plugins/phpBB/viewtopicPhpbb.php?f=18...

Thanks Nick! I believe I would need to use MocoTranslationTrackingGoal since I am trying to maximize the velocity of a body instead of a specific coordinate. However, it seems that to do so I would have to provide a guess for the trajectory for the entire motion. I would like to avoid this so I don'...

I am not sure if there is a way to get all the outputs of the model, but you can use the API reference to look up the outputs of specific components of a model. For example, bodies inherit frame outputs ( https://simtk.org/api_docs/opensim/api_docs/classOpenSim_1_1Frame.html ), joint outputs are lis...

Thank you for the helpful suggestions! I have a couple of follow up questions: 1. Thank you Pasha for pointing me to the outputs of Frame. I am now using 'linear_velocity' which is a Vec3 instead of a SpatialVec. This still doesn't eliminate the problem of being a non-scalar, but does get one step c...

Hi everyone, I would like to use Moco to maximize the velocity of a certain body segment using MocoOutputGoal. I am currently adding this as a goal to a tracking simulation with the following lines of code: study = track.initialize() problem = study.updProblem() bodySet = model.getBodySet() hand = b...

We already have a MocoOutputGoal, which allows you to minimize any OpenSim Model output value. OpenSim Models provide an output for the whole-body center-of-mass position, velocity, and acceleration Can you explain in a little more detail how you would minimize/maximize the velocity of center-of-ma...

Thank you! I was hoping to use Static Optimization because it solves relatively quickly, but that makes sense that the muscle won't fatigue with SO because there is no forward integration. CMC seems to work just fine other than taking quite a bit longer.

Thanks again,

Ty

I believe this model should have what you are looking for: https://simtk.org/projects/20_eulerdofhand

Hi OpenSim community, I am trying to run a Static Optimization simulation using the FatigableMuscle model given in OpenSim 4.1\Resources\Code\CPP\MuscleExample. I was able to create a plugin for the FatigableMuscle, load the plugin into the GUI, load the model with updated FatigableMuscles, and run ...

Were you able to figure out a solution for this? I am also interested in making a video using the API visualizer without having to select View> Save Movie

Best,

Ty