Vector(a,b, etc)

creates a vector of the number of components specified

! Create a metric signal with 2 components and one frame [Metric_Explicit] ! /RESULT_METRIC_FOLDER=PROCESSED /RESULT_METRIC_NAME=VEC2 /METRIC_VALUE=2+3 ; ! Create a vector containing a constant, a two dimensional metric and a 3 dimensional model based signal. Evaluate_Expression /EXPRESSION=vector (1, METRIC::PROCESSED::VEC2, LINK_MODEL_BASED::ORIGINAL::RKNEE_ANGLE) ! /SIGNAL_TYPES= ! /SIGNAL_FOLDER=ORIGINAL ! /SIGNAL_NAMES= ! /RESULT_TYPES=DERIVED ! /RESULT_FOLDERS=PROCESSED /RESULT_NAME=TEST ! /APPLY_AS_SUFFIX_TO_SIGNAL_NAME=FALSE ; The resulting signal will have the first three columns (one for the constant, one for the vector of 2 components) buffered to the number of frames of RKNEE_ANGLE by replicating the first frame.

list(a,b,etc) – creates a list (column vector) of the number of rows specified:

unit_vector (a, b, etc) – creates a unit vector of the number of components specified:

Rotation_Multiply(a,b)

Example: Multiply two ROTATION signals Evaluate_Expression /EXPRESSION=ROTATION_MULTIPLY(ROTATION_INVERSE(ROTATION::ORIGINAL::PELVIS_SHIFTED_4x4),CURRENT_SIGNAL) /SIGNAL_TYPES=ROTATION ! /SIGNAL_FOLDER=ORIGINAL ! /SIGNAL_NAMES= /RESULT_TYPES=ROTATION ! /RESULT_FOLDERS=PROCESSED /RESULT_NAME=_MULT /APPLY_AS_SUFFIX_TO_SIGNAL_NAME=TRUE ;

Rotation_Inverse(a)

Example: Inverse of a 4×4 ROTATION signal or a 3×3 LINK_MODEL_BASED ROTATION A good description of the inverse of a ROTATION signals can be found here] Evaluate_Expression /EXPRESSION=ROTATION_INVERSE(ROTATION::ORIGINAL::PELVIS_SHIFTED_4x4) /SIGNAL_TYPES=ROTATION ! /SIGNAL_FOLDER=ORIGINAL ! /SIGNAL_NAMES= /RESULT_TYPES=ROTATION ! /RESULT_FOLDERS=PROCESSED /RESULT_NAME=_INV /APPLY_AS_SUFFIX_TO_SIGNAL_NAME=TRUE ;

Rotation_Transpose(a)

Example: Transpose of a 3×3 LINK_MODEL_BASED ROTATION signal Evaluate_Expression /EXPRESSION=ROTATION_TRANSPOSE(ROTATION::ORIGINAL::PELVIS_SHIFTED_4x4) /SIGNAL_TYPES=ROTATION ! /SIGNAL_FOLDER=ORIGINAL ! /SIGNAL_NAMES= /RESULT_TYPES=ROTATION ! /RESULT_FOLDERS=PROCESSED /RESULT_NAME=_T /APPLY_AS_SUFFIX_TO_SIGNAL_NAME=TRUE ;

This was created for the Shadow segments introduced in 2024. Create a 4×4 Rotation from the Visual3D pose of a segment, with the translation of the origin represented in any coordinate system, and the orientation defined by Euler angles and the Euler sequence. POSE_EULER2ROTATION4X4(R_HEEL,0,0,0,123)