Hi all, I want to write pre-defined x nodes values in the CMC_constraint.xml file. e.g. <x_nodes> <ControlLinearNode name=""> <t> 0.20999999999999999000 </t> <value> 0.01000000000000000000 </value> </ControlLinearNode> Is there any easy way to write the values (stored in excel file) to xml file in t...

Hi all, I want to study muscle compensation strategies to track the normal gait pattern when over-activity are present in certain muscle, but not sure how to do it in Opensim. I guess I can run CMC on healthy subjects, and manually increase the excitations of certain muscle, and then re-run CMC to t...

Hi all, I am using Gait 2392 model to simulate squat motion, no solution was found by the optimizer for knee flexion angle larger than 60 degrees in CMC. I have tried increase reserve and residual forces, muscle strength, nothing worked. SimTK Exception thrown at InteriorPointOptimizer.cpp:262: Opti...

Hi Lydia, I got similar CMC failure in squatting (gait2392.osim) when knee flexion angle reached around 60 degrees. SimTK Exception thrown at InteriorPointOptimizer.cpp:262: Optimizer failed: Ipopt: Restoration failed (status -2) Have you fixed the problem? I already tried to increase reserve and re...

Hi Ayman, Thank you for your suggestions. The CMC run to completion when I increased few 'weights' in the CMC_task.xml, but the warning message still appeared in every computing step. I will consult authors for this part. I have done a further induced acceleration analysis, and the superposition gen...

Hi all, I am trying to run CMC on Arnoldetal2010_2Legs.osim model with own experimental gait data (scaling, Ik and RRA worked fine, and I had quite small residuals after running RRA twice), I got warning message in computing initial values and almost in every timestep. e.g. CMC.computeControls: t = ...

Hi Ayman,

Thank you for your quick answer. Option 3 works!!

Ruoli

Hi, I am trying to run scaling on Arnoldetal2010_2legs.osim model in v2.4, but some of the bones were not displayed in the scaled.osim. It displayed well in the generic model. The geometry folder and all other files are all in the working directory. In the GUI, I can see .vtp files are under the dis...

Hi Ayman,

The full path finally solved the problem. All the related files have to be referred using full path. Thank you!

Just curious, why it has to be full path in the setup_analyze.xml? but not in the other setup files e.g. setup_cmc.xml?

Best regards,

Ruoli

Hi Ayman,

I used /ResultsCMC/subject01_walk1_controls.xml, but today I also tried ./ResultsCMC/subject01_walk1_controls.xml, did not work either, same error message.

Ruoli