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--- visual3d:documentation:pipeline:metric_commands:metric_time_of_minimum_from_event [2025/09/19 15:07] – [Command Parameters] wikisysop
+++ visual3d:documentation:pipeline:metric_commands:metric_time_of_minimum_from_event [2025/09/25 14:36] (current) – [Examples] wikisysop
@@ Line 72: / Line 72: @@
 In Version 5 a series of metric commands were introduced to identify the time of a threshold crossing or maximum at the analog rate.
-====Examples====
+====Example: Timing of knee extension====
+Here we will use **Metric Time of Minimum from Event** to find the time it takes a subject to reach a local minimum knee extension value (most knee bend) after each toe off.
+Pipeline Command:
+<code>
+Metric_Time_Of_Minimum_From_Event
+ /RESULT_METRIC_TIME=R_Knee_ext_time
+ /RESULT_METRIC_VALUE=R_knee_ext_val
+ /RESULT_FOLDER=PROCESSED
+ /RESULT_COMPONENTS=ALL
+/SIGNAL_TYPES=LINK_MODEL_BASED
+ /SIGNAL_FOLDER=ORIGINAL
+ /SIGNAL_NAMES=RKneeAngle
+ /SIGNAL_COMPONENTS=X
+! /FRAME_OFFSET=0
+! /TIME_OFFSET=
+ /EVENT_SEQUENCE=RTO+RHS
+! /EXCLUDE_EVENTS=
+! /EVENT_SEQUENCE_INSTANCE=0
+! /EVENT_SUBSEQUENCE=
+! /SUBSEQUENCE_EXCLUDE_EVENTS=
+! /EVENT_SUBSEQUENCE_INSTANCE=0
+! /EVENT_INSTANCE=0
+! /FRAME_WINDOW=8
+! /THRESHOLD=
+;
+</code>
+====Complex Example: Comparing Time to Minimum Ankle Moment and Time to Minimum Ankle Power====
+Here we will build on the example above and use the **Metric Time of Minimum From Event** command along with the **Automatic Gait Signals** command to compare the time it takes to reach minimum ankle moment after a heel strike with the time it takes the reach the minimum ankle power on the same side and identify a relationship.
+Start by defining key gait events for the trial using **Automatic Gait Events**:
+<code>
+Automatic_Gait_Events
+! /FRAME_WINDOW=8
+! /USE_TPR=TRUE
+! /TPR_EVENT_INSTANCE=1
+;
+</code>
+Next we will compute the value and time to minimum value after heel strike of the ankle power and ankle moment for the right leg:
+<code>
+Metric_Time_Of_Minimum_From_Event
+ /RESULT_METRIC_TIME=R_Ankle_Power_time
+ /RESULT_METRIC_VALUE=R_Ankle_Power_val
+ /RESULT_FOLDER=PROCESSED
+ /RESULT_COMPONENTS=X
+/SIGNAL_TYPES=LINK_MODEL_BASED
+ /SIGNAL_FOLDER=ORIGINAL
+ /SIGNAL_NAMES=RAnklePower
+ /SIGNAL_COMPONENTS=X
+! /FRAME_OFFSET=0
+! /TIME_OFFSET=
+ /EVENT_SEQUENCE=RHS+RTO
+! /EXCLUDE_EVENTS=
+! /EVENT_SEQUENCE_INSTANCE=0
+! /EVENT_SUBSEQUENCE=
+! /SUBSEQUENCE_EXCLUDE_EVENTS=
+! /EVENT_SUBSEQUENCE_INSTANCE=0
+! /EVENT_INSTANCE=0
+! /FRAME_WINDOW=8
+! /THRESHOLD=
+;
+</code>
+<code>
+Metric_Time_Of_Minimum_From_Event
+ /RESULT_METRIC_TIME=R_GRF_time
+ /RESULT_METRIC_VALUE=R_GRF_val
+ /RESULT_FOLDER=PROCESSED
+ /RESULT_COMPONENTS=X
+/SIGNAL_TYPES=LINK_MODEL_BASED
+ /SIGNAL_FOLDER=ORIGINAL
+ /SIGNAL_NAMES=RGRF
+ /SIGNAL_COMPONENTS=X
+! /FRAME_OFFSET=0
+! /TIME_OFFSET=
+ /EVENT_SEQUENCE=RHS+RTO
+! /EXCLUDE_EVENTS=
+! /EVENT_SEQUENCE_INSTANCE=0
+! /EVENT_SUBSEQUENCE=
+! /SUBSEQUENCE_EXCLUDE_EVENTS=
+! /EVENT_SUBSEQUENCE_INSTANCE=0
+! /EVENT_INSTANCE=0
+! /FRAME_WINDOW=8
+! /THRESHOLD=
+;
+</code>
+Four new folders within **PROCESSED** in the **METRIC** folder tell us how long it takes to reach the minimum right ankle power and right GRF values as well as the time it takes to reach those values.
+{{:visual3d:documentation:pipeline:metric_commands:rankle_val_2.png?400|}}{{:visual3d:documentation:pipeline:metric_commands:rankle_time_2.png?400|}}
+{{:visual3d:documentation:pipeline:metric_commands:moment_time.png?400|}}{{:visual3d:documentation:pipeline:metric_commands:moment_value.png?400|}}