doc:sto

The .sto File Format

The results of a SCONE simulation are stored in the STO File format, which is a row/column based format, in which the data type is stated in the column headers:

Channel Name Data Type
time Time [s]
<dof> Value of a specific Degree of Freedom during the simulation in [rad] or [m]
<dof>_u Derivative (speed) of a specific Degree of Freedom during the simulation in [rad/s] or [m/s]
.activation Current activation [0..1] of a muscle
.fiber_length Current length [m] of the contractile element of the muscle
.fiber_length_norm Current length of the contractile element of the muscle, normalized by optimal fiber length
.fiber_velocity Current lengthening velocity [m/s] of the contractile element of the muscle
.fiber_velocity_norm Current lengthening velocity of the contractile element of the muscle, normalized by optimal fiber length
.excitation Current excitation [0..1] of the muscle
.F Normalized contraction force [0..1] of a muscle
.L Normalized CE length of a muscle
.V Normalized contraction velocity of a muscle
.com_pos_* Center of Mass position [m] of a body
.lin_vel_* Linear velocity [m/s] of the Center of Mass of a body
.ori_* Global orientation of a body, stored as a rotation vector [rad]
.ang_vel_* Angular velocity [rad/s] of a body
.load Joint load [BW], normalized by weight, i.e. load = joint_force / ( model_mass * g )