Thank you very much Dimitar for your quick reply! I was looking in the wrong parameter in the analysis tool.

Best wishes,
Ursula

Dear OpenSim community,

is there a simple way to export the body coordinate frame vectors (x,y,z) in the global frame during a movement? I can visualize them in the GUI but have not found yet a way to export them (e.g. over the analyze tool?).

Thank you in advance!
Ursula

For further information please see the paper of E. Passmore "Improving repeatability of setting volume origin and coordinate system for 3D gait analysis", Gait & Posture 39 (2014) 831–833.

Dear OpenSim community, I would like to share an experience our team had with using RRA. We were sure our lab was set up properly and the experimental data were correct which we used as an input into OpenSim. However, we received a systematic error after running RRA. The centre of mass (CoM) of the ...

Dear Open-Sim community, I have a question regarding the RRA-tool. One of the output files is the adjusted .osim file. However, as far as I understood, only the CoM of the torso is automaticly adjusted in this file and not the segments' mass which, in the out.log file, are also recommened for adjust...

James, It works perfectly! I used for the weighting of the markers in the IK-tool the same markers so the positions of the segments stay the same (normaly I include in the IK task of the scaling-tool different markers than in the IK-tool). If not the position of the model changes slightly. Best Ursula

I just got the tip from one of the OpenSim guys to only run the scaling part of the scale model tool and then run the IK-tool with the command <report_marker_locations> true </report_marker_locations> Through this I can get the marker location on the generic model before the markers get accordingly ...

Hi Alice I am not sure if I understand your question correctly. These functions are defined in the API of OpenSim (https://simtk.org/api_docs/opensim/api_docs/annotated.html). There you can find all commands you can use with MATLAB after you have configurised MATLAB with OpenSim using the configureO...

Just found this command:

<report_marker_locations> true </report_marker_locations>
https://simtk.org/forums/viewtopic.php? ... ons#p10342

Perhaps this is of any use for you?

Best
Ursula

I found an older post explaining how to receivce the positions of the virtual markers in IK through following command: <report_marker_locations> true </report_marker_locations> https://simtk.org/forums/viewtopic.php?f=91&t=4355&p=10342&hilit=report_marker_locations#p10342 So it is easy to calculate ...