Hello Nick and David, I'm also interested in using IAA with my result from OpenSim Moco. From what I researched, the IAA will use External Loads and Kinematic Constraints in the foot to solve the problem. Wouldn't it work with the Contact Forces in the feet? I already had the Analyze tool working wi...

Hi Aaron, I've searched for something like that before and found something along the way what Pasha mentioned: https://github.com/modenaxe/MuscleParamOptimizer It was cited here: https://simtk.org/plugins/phpBB/viewtopicPhpbb.php?f=1815&t=12159&p=0&start=0&view=&sid=991fa3996141e946a52a340d14dcee61 ...

I also will try Moco in OpenColab.

Any suggestions or directions?

Hello Christian, The first step is to create the files for state tracking and GRF tracking. I think the GRF is already solved since you already used. In my simulation, I used a subset of states to pass to the MocoStateTrackingGoal. At the time, it was easier than using a complete state solution and ...

Thanks Ross. Mr. Bones is getting wiser with the help from the forum. I will continue exploring the weights for the goals, as well as comparing them to the literature. The main goal is to use this problem (jumping) to fine-tune the procedures for further clinical motions. I just thought that looking...

Thanks a lot Nick!! Really appreciate the example code. I will use in the future with 92 muscles (double fingers crossed). And here are the results! A lot of improvements. Thanks a lot Tom, Ross and Nick! Both simulations took more than 10h. So I couldn't test all the scenarios discussed here, but d...

Perfect! Thanks a lot Nick!!!! So, if I want to use the pelvis_ty value, I just use the output from bodyset/pelvis|position right into MocoOutputFinalGoal? The negative weight was something that I just thought another day about why I never used... :( But for the CoM, how can it be done? I see the do...

The jump height cost was designed using a custom marker on the top of the head and the MocoMarkerFinalGoal, as in the code below. finalCost = osim.MocoMarkerFinalGoal() finalCost.setName("alturaSalto") finalCost.setWeight(listParam[parmDict['targetWeight']]) finalCost.setPointName("/markerset/Top.He...

That's a great point, Ross. I think my initial approach was to create a jump that should resemble a jump evaluation. Where, with arms akimbo, it often appears that full triple extension of the hip, knee, and plantarflexion. Maybe I started in the wrong direction, or the available Moco goals drove me...

Thanks a lot for the comments, Prof. van den Bogert and Prof. Miller; I've been dealing with those issues in the last month or more, and it is great to discuss them in such detail. I really appreciate it. Regarding the buckling, I don't know if they are holding back the final jump height (20cm COM d...