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visual3d:documentation:pipeline:metric_commands:metric_signal_value_at_event [2024/07/17 15:46] – created sgrangervisual3d:documentation:pipeline:metric_commands:metric_signal_value_at_event [2025/05/21 17:36] (current) – Cleaned up page for a customer. Still needs to be put into Pipeline project format. wikisysop
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 ====== Metric Signal Value At Event ====== ====== Metric Signal Value At Event ======
  
-==== Legacy Command ====+The Metric_Signal_Value_At_Event command provides the value of the specified signal at the specified frame of data is stored as a metric.
  
-**Metric_Signal_At_Event** replaced the command **Signal_Value_At_Event** +Notes: 
- +  * All components of the specified signal will be stored in the metric signal. The user also has the option to select an individual component
-==== Description ==== +
- +
-The value of the specified signal at the specified frame of data is stored as a metric. +
- +
-  * All components of the specified signal will be stored in the metric signal. +
-    * **Since version 5:** the user has the option to select an individual component+
   * If there are multiple occurrences of an EVENT, there will be multiple entries in the metric that is created.   * If there are multiple occurrences of an EVENT, there will be multiple entries in the metric that is created.
   * There is an option to calculate the mean and standard deviation for metrics that have multiple values.   * There is an option to calculate the mean and standard deviation for metrics that have multiple values.
 +  * In cases where there is **NO_DATA** at an event, you need to specify the parameter **/Retain_No_Data_Values=TRUE** should you want this included in the resulting signal.
 +  * **Metric_Signal_At_Event** replaced the legacy command **Signal_Value_At_Event**
  
 {{:MetricSignalValueAtEvent.png}} {{:MetricSignalValueAtEvent.png}}
  
-|**Metric_Signal_Value_At_Event**                                                         |                                                                                                                                                                         |+===== Parameters ===== 
 + 
 +^ Parameter ^ Description ^
 |**/Result_Metric_Name=**                                                                 |The name of the resulting signal.                                                                                                                                        | |**/Result_Metric_Name=**                                                                 |The name of the resulting signal.                                                                                                                                        |
 |**/Result_Metric_Folder=**                                                               |The folder that will contain the resulting signal                                                                                                                        | |**/Result_Metric_Folder=**                                                               |The folder that will contain the resulting signal                                                                                                                        |
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 |**/Retain_No_Data_Values=**                                                              |(True or False) If the result is no_data, retain the value.                                                                                                              | |**/Retain_No_Data_Values=**                                                              |(True or False) If the result is no_data, retain the value.                                                                                                              |
  
-==== Example Value of a Target ====+===== Example: Find Value of a Target =====
  
 This example calculates the value of the TARGET **RFT1** at the Event_Label **RON** This example calculates the value of the TARGET **RFT1** at the Event_Label **RON**
  
-**Metric_Signal_Value_At_Event**+<code> 
 +Metric_Signal_Value_At_Event
 /Result_Metric_Name=RFT1_ON /Result_Metric_Name=RFT1_ON
 /Result_Metric_Folder=PROCESSED /Result_Metric_Folder=PROCESSED
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 /Generate_Metric_Length_Metric=FALSE /Generate_Metric_Length_Metric=FALSE
 /Retain_No_Data_Values=TRUE /Retain_No_Data_Values=TRUE
-**;** +; 
-**Note:** In cases where there is **NO_DATA** at an event, you need to specify the parameter **/Retain_No_Data_Values=TRUE** should you want this included in the resulting signal.+</code>
  
-==== Example Time at an Event ==== +==== For a single Component ====
- +
-This example calculates the time of the Event_Label **RON** +
- +
-**Metric_Signal_Value_At_Event** +
-/Result_Metric_Name=RON_TIME +
-/Result_Metric_Folder=PROCESSED +
-/Signal_Types=FRAME_NUMBERS +
-/Signal_Names=TIME +
-/Signal_Folder=ORIGINAL +
-/Event_Name=RON +
-/Generate_Mean_And_Stddev=FALSE +
-/Append_To_Existing_Values=FALSE +
-/Generate_Metric_Length_Metric=FALSE +
-/Retain_No_Data_Values=FALSE +
-**;** +
-==== Component Workaround ====+
  
 Since Metric_Signal_Value_At_Event outputs all three components, here is a workaround of the previous example that will output one component. Evaluate_Expression is used to create a signal with one component, the z component for **RFT1**. Then the Metric_Signal_Value_At_Event will calculate the value of the TARGET **RFT1** at the Event_Label **RON**. Since Metric_Signal_Value_At_Event outputs all three components, here is a workaround of the previous example that will output one component. Evaluate_Expression is used to create a signal with one component, the z component for **RFT1**. Then the Metric_Signal_Value_At_Event will calculate the value of the TARGET **RFT1** at the Event_Label **RON**.
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 </code> </code>
  
-==== P2D Signals ====+===== Example: Calculate the Time of an Event =====
  
-Consider a P2D signal created using [[Visual3D:Documentation:Pipeline:Signal_Commands:Global_Normalized_Signal_Mean|Global_Normalized_Signal_Mean]]. +This example calculates the time of the Event_Label **RON** 
-The resulting signal has three components, an index, a mean signals, and a standard deviation signal + 
-It is possible to compute the maximum value of the 3 components using [[Visual3D:Documentation:Pipeline:Metric_Commands:Metric_Maximum|Metric_Maximum]] +<code> 
-It isn't possible to directly identify the standard deviation at that index because it isn't possible to define an Event for a time normalized signal (e.g.it has no frame rate or time. +Metric_Signal_Value_At_Event 
-Without having an event you cannot get the value of a signal at that event using Metric_Signal_Value_At_Event +/Result_Metric_Name=RON_TIME 
-One solution, albeit a non-intuitive solution is to [[Visual3D:Documentation:Pipeline:Expressions:Expressions_Overview#Signal_Functions|SORT]] (descending) the p2D signal by the second component (eg. the MEAN). +/Result_Metric_Folder=PROCESSED 
-**Evaluate_Expression**+/Signal_Types=FRAME_NUMBERS 
 +/Signal_Names=TIME 
 +/Signal_Folder=ORIGINAL 
 +/Event_Name=RON 
 +/Generate_Mean_And_Stddev=FALSE 
 +/Append_To_Existing_Values=FALSE 
 +/Generate_Metric_Length_Metric=FALSE 
 +/Retain_No_Data_Values=FALSE 
 +; 
 +</code> 
 + 
 +===== P2D Signals ===== 
 + 
 +Consider a [[visual3d:documentation:definitions:file_formats:p2d_format|P2D]] signal created using [[Visual3D:Documentation:Pipeline:Signal_Commands:Global_Normalized_Signal_Mean|Global_Normalized_Signal_Mean]]. The resulting signal has three components, an index, a mean signals, and a standard deviation signal. It is possible to compute the maximum value of the 3 components using [[Visual3D:Documentation:Pipeline:Metric_Commands:Metric_Maximum|Metric_Maximum]] but it isn't possible to directly identify the standard deviation at that index because it isn't possible to define an Event for a time normalized signal (e.g.it has no frame rate or time. 
 + 
 +Without having an event you cannot get the value of a signal at that event using Metric_Signal_Value_At_Event. One solution, albeit a non-intuitive solution is to [[Visual3D:Documentation:Pipeline:Expressions:Expressions_Overview#Signal_Functions|SORT]] (descending) the P2D signal by the second component (eg. the MEAN). 
 + 
 +<code> 
 +Evaluate_Expression
 /EXPRESSION=SORT(P2D::TEST::LHIP_ANGLE, -1.0, 2) /EXPRESSION=SORT(P2D::TEST::LHIP_ANGLE, -1.0, 2)
 ! /SIGNAL_TYPES= ! /SIGNAL_TYPES=
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 /RESULT_NAME=LHIP_ANGLE_SORTED /RESULT_NAME=LHIP_ANGLE_SORTED
 !/APPLY_AS_SUFFIX_TO_SIGNAL_NAME=FALSE !/APPLY_AS_SUFFIX_TO_SIGNAL_NAME=FALSE
-'//;// +; 
-For the resulting signal, the maximum value and the associated standard deviation will be in the first frame+</code>
  
 +For the resulting signal, the maximum value and the associated standard deviation will be in the first frame.
  
visual3d/documentation/pipeline/metric_commands/metric_signal_value_at_event.txt · Last modified: 2025/05/21 17:36 by wikisysop