Hello everyone,
I'm currently working with AnyBody to run simulations in order to generate data for later attempts at predicting the position of the Pelvis in a seated posture. I'm quite new to AnyBody, and I’ve encountered my first question.
I need to extract the positions of the following anatomical points:
- LASIS
- RASIS
- LPSIS
- RPSIS
- C7
For each of these points, I can see both r and Axes values in the output .h5 files. From what I observe, the values in r do not appear to be in global coordinates.
However, my goal is to compute the equations of planes formed by subsets of these points for further data processing and analysis — so I need their positions in the global coordinate system.
Could someone please help me understand:
- How exactly can I compute the global coordinates of these points using the data available?
- Are r and Axes sufficient for this transformation?
- Also, does the Axes matrix store its coordinate axes as rows or columns?
- Is it correct to obtain global coordinates by simply multiplying the Axes matrix by the r vector?
Thank you in advance for your help!