Hi, Thanks for your explanation. But I don't understand how to fix the .trc to the model. This is the Experimental Data and the model markers I set.[img] trc.png [/img] I guess the experimental arm is not perfectly straight. I set the markers by my eyeballing, which is based on the joints' shape. Be...

by the way, what do you mean 'the model is grounded'? How to check/set-up this?

[img] limb.png [/img] The right one is before scaling. The left one is after scaling. The error is 10e-4. [img] limbexp2.jpg [/img] It is the experimental example. The marker setting changed obviously. [img] limb.png [/img] It is one of the frames of motion, IK computing after scaling. The angles of...

Hi Dimitar, Thanks a lot for your reply. Indeed our scaling did not work well. After scaling, the locations of markers are moved and does not match those of experiment set-up. We tried to adjust the attachment locations (to the bone) of the markers, but could not get good results. Can you please giv...

I am working on a project about musculoskeletal (shoulder) modeling and using OpenSim in this project. From the website, we downloaded several musculoskeletall shoulder models, e.g.Dynamic Upper Limb and set up 6 markers on the models based on the experiment set-up. However, after scaling, the marke...