Exporting data from Noraxon IMU system in a format compatible with OpenSim

[Sudha Srinivasan]

Hello,
We are collecting kinematic data on upper extremity motions using the Noraxon IMU system. The Noraxon IMU system outputs the data in multiple formats (".slk" format which is the native format of the software, csv file with data from all markers in a single file, and individual csv files per marker. However, we are unable to import any of these file formats into OpenSim. Does anyone have ideas on how to import data from Noraxon into OpenSim? Are there any available scripts that can convert these data into a format compatible with OpenSim? Any help and suggestions will be most appreciated!

Thank you so much!
Sudha Srinivasan (University of Connecticut)

[Colin Smith]

You can read a .csv into MATLAB, then use the MATLAB OpenSim interface to process the data in MATLAB directly, or to write .mot files you can read with OpenSim.

In our Noraxon Ultimum system you can also export .mat files, which are even easier to read into MATLAB.

This could all be done with python instead of MATLAB too.

[Sudha Srinivasan]

Dear Colin,
Thank you so much for your reply. This is helpful. I was able to open the MATLAB OpenSim interface and was also able to export files as .mat files from Noraxon as you suggested. Is there a script that you could share to convert the ".mat" files to ".mot" format?
Thank you so much for your help!
Best,
Sudha.