You do not have to set up your lab for opensim convention, if this is what is causing the problem. You can collect the data and apply rotational transformation to convert in its convention.

I hope I am understanding the question right.

<t>Hi Tim<br/> <br/> Thanks alot. The marker data set does provide with the location of markers but the values are calculated with respect to a refernce frame. On looking at the file I realized that marker locations were calculated from a point fixed on the body/segment itself (an assumption). <br/>...

<t>Hi all,<br/> I am new to the area of MS modeling and trying out with OpenSim. I read through the tutorials and the user guide but could not figure out few things. <br/> We use a lab coordinate system and the user guide asked us to change it to model coordinate system. It is different for differen...