Rotating experimental data fails

[A-Artemis]

Steps to reproduce

1. Open a .trc file by clicking File->Preview Experimental Data.
2. Open the experimental data in the navigator to right click the .trc and click Transform...
3. Rotate X by 90 degrees (I have tried Y and Z with angle [90, 180, 270, 360].
4. Click on Save As... (I use the default name which is transformed_XXX.trc).
5. Click on OK to close the dialogue box.
6. Open the newly created transformed_XXX.trc file by clicking File->Preview Experimental Data.

Expected result

• The transformed .trc is opened and can be seen in the Visualizer Window, and correctly rotated.

Actual result

• The transformed data is not visible in VIsualizer Window. Below you can see both ExerimentalData_ in the Navigator but only 1 set of makers (this is from the original .trc) yet the markers of the new .trc are loaded. The floor and background is removed to see more of the environment.
  

• There is a chance that the saved transformed_XXX.trc is created but has 0 bytes.
  

• According to the documentation here it should be possible to view the rotation happen live with the use of the arrow keys, this does not work.

Environment and GUI version

• OpenSim GUI version 4.5-2024-01-10-3b63585

• Windows 11 x64

• Data as a .txt so that it can be uploaded here. 35_34_mokka.txt

• The data is taken from CMU Graphics Lab Motion Capture Database, subject 35 with motion 34. The .c3d data is downloaded and exported to a .trc with Mokka. This .trc is what I open in OpenSim.

• I have had a lot of trouble using the CMU dataset with OpenSim (scaling and XYZ-framing issues). If there is a better workflow (in Python preferably) to handle experimental data then please let me know. My goal is to get the angles of each joint coordinate in the OpenSim model in a .csv, which can then be used for AI training. My current workflow is .c3d -> .trc -> Inverse Kinematics -> .mot -> .csv

[mrrezaie]

Hi, related to #1385 and #1344

[aymanhab]

Visualizer rotation should be fixed by #1507 will reassess after ci. I would not use the GUI for such workflow, and go for all python solution utilizing jupyter notebooks and opensim as described here
https://github.com/opensim-org/opensim-models/tree/master/notebooks
I'd be happy to help you set this up, and would be wonderful if you "donate" the resulting script to the community (logistics TBD)

[aymanhab]

The issue was rotating data is fixed in these build artifacts @A-Artemis and @mrrezaie
https://github.com/opensim-org/opensim-gui/actions/runs/9198670131
While I couldn't reproduce the 0 size file, it's possible it's a downstream effect. Please check the artifacts and let me know.

[mrrezaie]

Hi @aymanhab, I tested the latest artifact and everything worked perfectly. Thanks for the fix.

[aymanhab]

Awesome, thanks @mrrezaie for the quick turnaround 👍 and thanks @A-Artemis for reporting. Will merge after review