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--- visual3d:documentation:pipeline:event_commands:event_maximum [2024/07/16 16:58] – removed sgranger
+++ visual3d:documentation:pipeline:event_commands:event_maximum [2025/03/03 21:17] (current) – wikisysop
@@ Line 1: / Line 1: @@
+====== Event Maximum ======
+==== Overview ====
+The **Event_Maximum** command is used to detect the maximum value of a specified signal within a defined event sequence or range and create an event at that location. This command can evaluate different components of a signal (X, Y, Z, Residual) and can apply offsets to shift the detected event if needed.
+  * Useful for identifying peak forces, peak joint angles, or maximum accelerations during specific phases of a motion, such as between initial contact and toe-off during gait.
+==== Pipeline Command ====
+The command below is as seen in the Visual3D application:
+<code>
+Event_Maximum
+/RESULT_EVENT_NAME=
+! /SIGNAL_TYPES=
+! /SIGNAL_FOLDER=ORIGINAL
+! /SIGNAL_NAMES=
+! /SIGNAL_COMPONENTS=
+! /FRAME_OFFSET=0
+! /TIME_OFFSET=
+! /EVENT_SEQUENCE=
+! /EXCLUDE_EVENTS=
+! /EVENT_SEQUENCE_INSTANCE=0
+! /EVENT_SUBSEQUENCE=
+! /SUBSEQUENCE_EXCLUDE_EVENTS=
+! /EVENT_SUBSEQUENCE_INSTANCE=0
+! /EVENT_INSTANCE=0
+! /FRAME_WINDOW=8
+! /THRESHOLD=
+;
+</code>
+==== Command Parameters ====
+The following table shows the command parameters and descriptions:
+|**Parameter**  |**Description**|
+|**/RESULT_EVENT_NAME=**|The name assigned to the detected peak event.|
+|**!/SIGNAL_TYPES=**|Indicates type of signal analyzed.|
+|**!/SIGNAL_FOLDER=ORIGINAL**|Specifies the folder containing the target signal (typically ORIGINAL)|
+|**!/SIGNAL_NAMES=**|The name of the signal to analyze.|
+|**!/SIGNAL_COMPONENTS**|Which components to evaluate (X, Y, Z, Residual)|
+|**!/FRAME_OFFSET=**|Optional offset in frames to shift the detected event.|
+|**!/TIME_OFFSET=**|Optional offset in seconds to shift the detected event.|
+|**!/EVENT_SEQUENCE=**|Defines the sequence of events used.|
+|**!/EXCLUDE_EVENTS=**|Events to exclude within the sequence.|
+|**!/EVENT_SEQUENCE_INSTANCE=0**|Specifies which instance of the sequence to evaluate (0 to consider ALL)|
+|**!/EVENT_SUBSEQUENCE=**|Defines a smaller sequence within the main even sequence.|
+|**!/SUBSEQUENCE_EXCLUDE_EVENTS**|Events to exclude from the subsequence.|
+|**!/EVENT_SUBSEQUENCE_INSTANCE=0**|Specifies which instance of the subsequence to evaluate.|
+|**!/EVENT_INSTANCE=**|Specifies which instance of the event to label (0 for all, positive for first occurrences, negative for last occurrences).|
+|**!/FRAME_WINDOW=**|Number of frames around the maximum that must satisfy the threshold.|
+|**!/THRESHOLD=**|Defines the minimum value the signal must reach to qualify as a peak.|
+==== Dialog ====
+The command can be edited in a text editor or in the dialog. To edit in the dialog, click on the **Edit** button in the pipeline workshop or double-click on the pipeline command. The dialog is shown below:
+{{:visual3d:documentation:pipeline:event_commands:event_max_dialog.png?400|}}
+----
+==== Examples ====
+=== Example 1: Dialog Box ===
+The first example will cover the command using the dialog. To create the RKFlex_MaxLocal event using the Event_Maximum dialog box:
+. Add the **Event_Maximum** command to the pipeline. Then, enter information into dialog box:
+**Event_Name:** RKFlex_MaxLocal\\
+**Select Frame Offset:** 0\\
+**Signal Components:** X\\
+**Event Sequence:**RHS -> RHS (use arrows to move from defined events list into sequence.) \\
+**Event Sequence Instance:**0\\
+{{:Event_Max_RKFlex_MaxLocal.jpg?400}}
+. Close the dialog, on the Signals and Events tab, select the desired signal from the data tree, in this case **Right_Knee_Angle**. Navigate into the LINK_MODEL_BASED items folder, and select the checkbox beside the signal.
+. Open the pipeline workshop again, and then click on **Import Selected Signals**.
+{{:Event_Max_RKFlex_MaxLocal_Import.jpg?600}}
+**RKFlex_Max** will be created at the minimum value during the gait cycle within the specified frame window.
+=== Example 2: Finding maximum event within a defined event sequence. ===
+----
+==== Notes ====
+**Specify an Event Label(s) at the specified local Maxima of a signal.**
+**If the global maxima are needed, see the [[Visual3D:Documentation:Pipeline:Event_Commands:Event_Global_Maximum|Event_Global_Maximum]] command**
+To review the difference between local and global maximum values please see [[Visual3D:Documentation:Pipeline:General_Information:Global_vs_Loca_Max_and_Min|here]].
+==== Visual3D_Version5 ====
+In version 5 the command has been extended to include the Event_Sequence and Exclude_Events parameters.
+|**Event_Maximum**\\ \\ /RESULT_EVENT_NAME=EVENT_MAX\\ \\ /SIGNAL_TYPES=TARGET\\ \\ /SIGNAL_FOLDER=ORIGINAL\\ \\ /SIGNAL_NAMES=LFT2\\ \\ /SIGNAL_COMPONENTS=Z\\ \\ /FRAME_OFFSET=0\\ \\ /TIME_OFFSET=\\ \\ /EVENT_SEQUENCE=\\ \\ /EXCLUDE_EVENTS=\\ \\ /EVENT_SEQUENCE_INSTANCE=0\\ \\ /EVENT_SUBSEQUENCE=\\ \\ /SUBSEQUENCE_EXCLUDE_EVENTS=\\ \\ /EVENT_SUBSEQUENCE_INSTANCE=0\\ \\ /EVENT_INSTANCE=0\\ \\ /FRAME_WINDOW=8\\ \\ /THRESHOLD=0.14\\ \\ **;**|{{:EventMaximumDlg5.jpg}}|
+\\
+Other options within the command such as **Exclude Event**, and **Select Subsequence** are explained in detail on the [[Visual3D:Documentation:Pipeline:Event_Commands:Event_Global_Maximum#Examples|Event_Global_Maximum]] page.
+If /Threshold is empty, all local maximum are identified.
+If /Threshold has a value or expression, only local maximum that are greater than the threshold are identified.
+----
+Other options within the command such as **Exclude Event**, and **Select Subsequence** are explained in detail on the [[Visual3D:Documentation:Pipeline:Event_Commands:Event_Global_Maximum#Examples|Event_Global_Maximum]] page.
+----
+===== Version 4 =====
+|\\ \\ \\ <code>\\ Event_Maximum\\ /Signal_Types=The type of signal to be evaluated\\ /Signal_Names=The names of the signals to be evaluated\\ /Signal_Folder=The name of the signal folder\\ /Event_Name=The name to be given to the threshold event\\ /Select_X=(True or False)Use this component of the signal\\ /Select_Y=(True or False)Use this component of the signal\\ /Select_Z=(True or False)Use this component of the signal\\ /Frame_Window=The range of frames of data that must be below the maximum\\ /Start_At_Event=The search begins from the start event\\ /End_At_Event=The search ends at the end event\\ /Event_Instance=\\ ;\\ </code>\\ \\ \\   |  Dialog that pops up when pipeline selection is edited by double clicking with the left mouse button.\\ {{:MinMaxDlg.jpg}}  |
+**Event Instance:** There may be several local maxima. A value of 0 results in all maxima being assigned a label. A positive number indicates the event (in sequence) to select. A negative number indicates the event starting from the last event and progressing to the first event.