scaling gait2354 model
Posted: Tue Jul 17, 2018 12:39 pm
Hi, I am trying the scaling tutorial using the gait2354.osim model:
https://simtk-confluence.stanford.edu:8 ... e+Dynamics
I followed the instructions for scaling and the model scaled w/out error. I have attached an image of the resulting scaled model (subject01), the unscaled model (3Dgait2354), and the experimental data displayed (blue dots from subject01_static.trc file).
Here are my questions:
1. I assume the offset between the unscaled and scaled model is intentional so it is easy to tell them apart???
2. The scaled model markers appear to have moved only in the yz plane to match the experimental data, but not in the x axis direction. Why is this?
3. I tried running the scaling again using the subject01 model but it still did not resolve question 2. In fact, the RMS marker and total errors increased. Why?
Thanks in advance for your help.
https://simtk-confluence.stanford.edu:8 ... e+Dynamics
I followed the instructions for scaling and the model scaled w/out error. I have attached an image of the resulting scaled model (subject01), the unscaled model (3Dgait2354), and the experimental data displayed (blue dots from subject01_static.trc file).
Here are my questions:
1. I assume the offset between the unscaled and scaled model is intentional so it is easy to tell them apart???
2. The scaled model markers appear to have moved only in the yz plane to match the experimental data, but not in the x axis direction. Why is this?
3. I tried running the scaling again using the subject01 model but it still did not resolve question 2. In fact, the RMS marker and total errors increased. Why?
Thanks in advance for your help.