tendon compliance - Millard muscle - MATLAB

[Josh Baxter]

Is it possible to query and set the TendonForceLengthCurve properties thru MATLAB? Particularly strain_at_one_norm_force using osim 3.3?

thanks - josh

[Adrian Lai]

Hi Josh,

To do it in MATLAB, you need to safeDownCast the Millard2012EquilibriumMuscle down to the TendonForceLengthCurve of each muscle, set/update the strain and then print the model.

Adrian

[Josh Baxter]

thanks adrian.

Code: Select all

% get muscle
thisMuscle = model.getMuscles.get(musclename);
thisMuscleSafe = Millard2012EquilibriumMuscle.safeDownCast(thisMuscle);
% access tendon properiets and edit
tendonprop = thisMuscleSafe.get_TendonForceLengthCurve();
strainatnorm = tendonprop.get_strain_at_one_norm_force();
tendonprop.set_strain_at_one_norm_force(newstrainval);
% save model to new osim file
model.print('new_strain.osim');