Hi Nick, That's right. For the PathSpring() I was able to fix the problem. I had too much variables for optimization, that's why it was able to reach the desired convergence tolerance by just optimizing the few of variables while other variables were remaind at the average of theirs boundaries. So I...

Hi everyone, I'm using MOCO parameter to optimize stiffness of PathSpring() actuator. Model is working in FD, optimization converges, parameters_require_initsystem is disable, Matlab 2022, Opensim 4.4 The problem is optimized parameter is always the average of it's boundary [min max] regardless of t...

Hi Nick, Sorry for delay in response, I'm dealing with Ph.D. stuff right now. What do you mean by large error of estimation of tendon_strain_at_one_norm_force? Did the solution not converge to the solution you would expect, or did the the problem violate the parameter bounds somehow? Solution conver...

Hi Nick, Thanks, I changed the intermediate parameter in the DeGrooteFregly2016Muscle.h ( here ) and MOCO_parameter successfully updated the internal variable (tendon_strain_at_one_norm_force) without enabling set_parameters_require_initsystem. However, I got a large error of the estimation of tendo...

Hi Nick,
I have learnt how to build from source code. Do you have any recommendation what exactly should change in source (DeGrooteFregly2016Muscle.cpp or other files) to solve this problem?

Best,
Sepehr

Hi I have a same problem. I followed the Superbuild instructors. In the section of "Configure and generate project files" when I want to configure Cmake I get this error CMake Error at CMakeLists.txt:836 (find_package): By not providing "Findcasadi.cmake" in CMAKE_MODULE_PATH this project has asked ...

Hi everyone, I'm coding with MATLAB and wondering is there any way to get the muscle's curvature data related to segment coordinate? The easy way is using markers to follow the muscle pathway (curvature) then use marker's position data and fitting curve (picture below). Capture3.JPG This way is time...

Hi Nick, Thanks, I'm trying to wrap up the project before a dead line, I was wondering if I can apply changes in my fork and try to test it in my system (I have my code in MATLAB). Presumably after fixing the bug in my fork I need to do extra steps to update the API (because I'm running my code with...

Hi Nick, My case is: parameter estimation of knee's flexors and extensors during Isokinetic knee flexion (0deg to 90deg). I'm using MOCOTrack, stateTracking for motion, plus control tracking (external force). estimation of these 2 parameters was successful: tendon_slack_length passive_fiber_strain_a...

If you use the DeGrooteFregly2016Muscle, it has a property called 'passive_fiber_strain_at_one_norm_force'. If you're trying to optimize passive forces and don't mind switching to that muscle, that could be viable alternative. Hi, quick update for this post it might be useful. I have used DegrooteM...