Hi Shayan, You can extract a certain column by first importing the data and, second, by choosing which column headings to extract the data for. filename = 'example.trc'; file=importdata(filename); yValues=file.colheaders(2:end); %takes all column names except time Instead of taking all columns excep...

Hi Aaron,

Ok, it seems as though there is an issue with the 'readtext' function. If you are still experiencing issues can you please attach one of your .trc files and I can try to load it?

Cheers,

Gavin.

Hi Aaron, Code exists already to read .trc, .mot, and .sto OpenSim output files in Matlab. See https://simtk.org/frs/?group_id=660 for helpful functions you can download. The function 'load_sto_file' in that package also works for .trc and .mot files. Alternatively, you can use file=importdata(fullf...

Hi, I have now solved this problem by creating additional coordinates and appending them to the existing coordinate set using 'cloneAndAppend', then using 'set_CoordinateSet' to append the new coordinate set onto the joint, and finally appending the modified joint to the model joint set. Regards, Ga...

Hi, I am interested in appending coordinates to a custom joint (knee) to include abduction/adduction and int/ext rotation. I know how to do this manually in the model xml file, however, would like to do it programatically using the API in Matlab. Currently, I am able to edit the existing coordinate ...

Hi Dimitar and Ton,

Thank you both for your prompt and detailed responses. I will implement your suggestions in OpenSim.

Regards,

Gavin.

Hi All, My goal is to determine 3-D joint powers for the ankle, knee, and hip using model 2392 and/or the recently released full body MSK model. After browsing through the forums (and biomch-l) I could not find any information on a conventional method to calculate 3-D lower-limb joint powers in Open...