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_4X4(R_HEEL,0,0,0,123)