The command Distance_Parallel_To_Path computes the dot product of a vector from the start to point p, with the straight line path defined as the position at Event1 to position at Event2. In the figure below, the blue line is the parallel distance from the point P.

The pipeline command below will calculate the distance travelled by the MID_PSIS TARGET parallel to its path between the events START and STOP. This distance will not be normalized.

Distance_Parallel_To_Path
/SIGNAL_TYPES=TARGET
/SIGNAL_NAMES=MID_PSIS
! /SIGNAL_FOLDER=ORIGINAL
/RESULT_NAME=PSIS_DISTANCE
! /RESULT_FOLDER=PROCESSED
/EVENT_NAME_START=START
/EVENT_NAME_STOP=STOP
/NORMALIZE_TO_DISTANCE=FALSE
;

If the NORMALIZE_TO_DISTANCE parameter is true then the resulting parallel distance is divided by the distance along the straight path.

Visual3D also contains commands for the Distance Perpendicular to Path and Distance Along Path. Or return to the Signal Commands overview.