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Dear Thomas,

I'm currently using mimicMeasure to train the model on joint angle variations from .sto files. When I work with an OpenSim 3 model, everything functions as expected. However, after switching to an OpenSim 4 model, I receive an error stating "No matching states."

For reference, the models I'm using are H0918M_osim4.osim and H0918v3.osim from the Example directory.

Could you please assist me in resolving this issue? Any guidance on how to make mimicMeasure compatible with OpenSim 4 models would be greatly appreciated.

Thank you very much for your help!

The names of the states have changed in OpenSim 4, so you would have to rename them in your .sto to be compatible.

Dear Thomas,

Thank you for your previous guidance.

Following your suggestions, I looked into SCONE's Analysis and discovered that there were indeed changes to the states. After adjusting the labels, I was able to successfully mimic the joint angles. However, I am still having trouble with mimicking the muscle activations.

Currently, I have modified the labels as follows, but I am unsure about the correct entry for include_state in mimicMeasure. I tried using the original *.activation as well as listing all relevant fields directly:

/forceset/gastroc_l/activation; /forceset/gastroc_r/activation;
/forceset/tib_ant_l/activation; /forceset/tib_ant_r/activation;
/forceset/hamstrings_l/activation; /forceset/hamstrings_r/activation;
/forceset/rect_fem_l/activation; /forceset/rect_fem_r/activation

Unfortunately, none of these matched successfully.

Could you please advise on the correct include_state format or provide further guidance on how to proceed?

Thank you very much for your help.

You should use "*/activation" (note the slash instead of the dot). Make sure you also correctly updated the names in the .sto file.