I have tried to evaluate the model, however I am getting an error related to the length of the hamstring muscle: SCONE error.JPG I have checked the muscle and it is defined in the same way as the model used in the tutorials and definitely not of 0 length. That said, the model will still attempt to o...

Hi Thomas, I implemented what you recommended in terms of storing data, using the z component of angular velocity. I can see in the analysis window that this is definitely changing through the simulation (using a more basic version of the simulation), however, when I run the scenario, it returns a f...

I'm having some trouble calling in stored values. I'm using the store_data function to store the acceleration but I can't figure out how to call that value back into the update function in the next iteration. I'm also trying to use one of the joint.load values that is automatically output in the ana...

Thanks for your help with the contact forces, that was very helpful. I am currently working that all right right side contact forces are pulled first, followed by left side contact forces. Could you confirm that this is correct?

Thanks!

Hi Thomas,

Wondering if there is a way to capture a body's acceleration vector in a lua script?

Thanks,
Aoife

I'm using a script controller and attempting to update model parameters using a simple feedback loop. Also, when I try to call on a contact force ( rightpedalcontactforce = R_foot:conact_force() ) in the controller I get the error message: SC.JPG I have tried calling on both the body of interest and...

Thanks for that Thomas. Just wondering when pulling contact forces for the lower limbs, does the controller retrieve all of the right side contact forces and then all of the left side contact forces or does it alternate from right to left or vice versa?

Thanks for all your help so far,
Aoife

Hi Thomas,

Just wondering if there is a way to extract a contact force for use in a script controller. I see in the LuaBody documentation that you can add a contact force, I wondered could I do the opposite and find the value of one already there?

Thanks!

Hi Thomas, I am trying to load a cycling model into SCONE (using a nonsense gaitmeasure at the minute, as I'm just playing around with it until I have found a way to measure the cycling ability of the model), however, if I try to optimise the scenario, I can leave it for hours without anything being...

I have downloaded OpenSim 4.0 on a Mac and am trying to configure Matlab. The OpenSim guide instructs me to run a file in the location C:/Users/<username>/Documents/OpenSim/4.0/Code/Matlab. This is not a location for me when I download OpenSim, instead the folder is found at: /Applications/OpenSim 4...