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0todd0000 / spm1d

One-Dimensional Statistical Parametric Mapping in Python
GNU General Public License v3.0
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Vector field analysis and joint coordinate system #23

Closed bernard-liew closed 9 years ago

bernard-liew commented 9 years ago

Dear Todd,

I read with interest the paper "Vector field statistics for objective center-of-pressure trajectory analysis during gait, with evidence of scalar sensitivity to small coordinate system rotations".

One can define angles/moments based on the proximal, distal, joint, lab coordinate system. Based on the CS used, one can lead to varying conclusions. Can vector field help in this case?

I appreciate your help :)

Regards, Bernard

0todd0000 commented 9 years ago

Hi Bernard, Yes, vector analyses (i.e. multivariate analyses) can help because they are CS-independent. In other words, you can rotate the CS arbitrarily and the multivariate results will be constant. Todd

bernard-liew commented 9 years ago

Thanks Todd,

Great help and I think this can be closed.

Regards, bernard