How to center a cloud of data points (x,y,z) to coordinate origin in 3-D space?

For gait analysis, I have multiple markers moving in 3-D space during the duration of 10 seconds and I'd like to center the each marker's 3-D coordinate (x,y,z) around the origin of coordinate (0,0,0). I'm wondering if there's a toolbox/function to achieve this?

For simplicity, I'll attach an example of 10 ms of one marker.

X (mm) y (mm) z (mm)

167.282166 372.896698 389.281158

167.471191 372.208740 389.362701

167.996216 372.071564 389.467804

168.180084 371.414276 389.551056

168.273346 370.742065 389.593597

168.421082 370.094299 389.734467

168.310608 369.163635 389.730011

168.288498 368.446075 389.701782

168.616959 368.038177 389.85672

168.659393 367.369171 389.916443

Answer 1

[Jan]

I'm not sure, what "center each marker" means. But I assume you want to subtract the mean value:

trajectory = [167.282166    372.896698    389.281158; ...
              167.471191    372.208740    389.362701; ...
              167.996216    372.071564    389.467804; ...
              168.180084    371.414276    389.551056];
centered_trajectory = trajectory - mean(trajectory, 1);