Metric StdDev

Overview

This metric signal is used to compute the Standard Deviation of a Signal and store the value as a metric. It can be found in the Pipeline Workshop under Metric.

Pipeline Command

The command syntax is as follows:

Metric_StdDev
! /RESULT_METRIC_FOLDER=PROCESSED
/RESULT_METRIC_NAME=
! /APPLY_AS_SUFFIX_TO_SIGNAL_NAME=FALSE
/SIGNAL_TYPES=
! /SIGNAL_FOLDER=ORIGINAL
! /SIGNAL_NAMES=
! /COMPONENT_SEQUENCE=
/EVENT_SEQUENCE=
/EXCLUDE_EVENTS=
! /GENERATE_MEAN_AND_STDDEV=TRUE
! /GENERATE_MEAN_AND_STDDEV_ACROSS_SUBJECTS=FALSE
! /APPEND_TO_EXISTING_VALUES=FALSE
;

Command Parameters

The following table shows the command parameters seen above and their descriptions:

RESULT_METRIC_FOLDER	The name of the result signal folder
RESULT_METRIC_NAME	The name of the result signal
APPLY_AS_SUFFIX_TO_SIGNAL_NAME	Apply suffix to processed signals
SIGNAL_TYPES	Types of signals to be processed
SIGNAL_NAMES	Names of signals to be processed
COMPONENT_SEQUENCE	Which component of the signal will be used for statistical analysis of the sequence.
EVENT_SEQUENCE	A list of events (separated by “+” signs). For example, LHS+RTO
EXCLUDE_EVENTS	This Event Sequence must not be during the sequence requested. For example, LTO_RHS
GENERATE_MEAN_AND_STDDEVE	(True or False)Generate the mean and standard deviation for all of the metrics created
GENERATE_MEAN_AND_STDDEV_ACROSS_SUBJECTS	(True or False)Generate the mean and standard deviation for all of the metrics created across all trials
APPEND_TO_EXISTING_VALUES	(True or False)Append this list of metrics to an existing metric of the same result name

Dialog

The command can be edited in a text editor or in a dialog form. To edit in the dialog pop up form either click on the Edit button in the pipeline workshop or double-click on the pipeline command. The dialog is shown below.

The dialog box allows you to assign values to the command parameters outlined above.

Example

In the following example, compute the Standard Deviation of the signal HANDSPEED

Metric_StdDev
/RESULT_METRIC_NAME=	_SD	The name of the metric signal created
/APPLY_AS_SUFFIX_TO_SIGNAL_NAME=	True	Specify the metric name to be the ORIGINAL signal plus a SUFFIX
/RESULT_METRIC_FOLDER=	PROCESSED
/SIGNAL_TYPES=	DERIVED
/SIGNAL_NAMES=	HANDSPEED	Specify the Signal to be used
/SIGNAL_FOLDER=	PROCESSED
/SIGNAL_COMPONENTS=	ALL_COMPONENTS	Specify the Signal components to be used (e.g. X, Y, Z or 0, 1, 2 etc)
/EVENT_SEQUENCE=	FRAME1 + GO	Specify the sequence of Events. Any number of Events can be entered (separated by +). This specific sequence of events must be true for a metric to be computed. The metric is computed from the first event in the sequence to the last event in the sequence
/EXCLUDE_EVENTS=	MAX_SPEED	If this event occurs before the first and last event, do not computed a metric
/SEQUENCE_PERCENT_START=	Within the event sequence specify the beginning of the range as a percent
/SEQUENCE_PERCENT_END=	Within the event sequence specify the end of the range as a percent
/GENERATE_MEAN_AND_STDDEV=	TRUE	Generate the mean and standard deviation of this metric across ranges and files
/APPEND_TO_EXISTING_VALUES==	FALSE	Do not Add these metric values to an existing metric
;

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