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--- visual3d:documentation:pipeline:metric_commands:metric_compute_dft_coefficients [2025/09/17 19:25] – wikisysop
+++ visual3d:documentation:pipeline:metric_commands:metric_compute_dft_coefficients [2025/09/23 15:08] (current) – [Examples] wikisysop
@@ Line 58: / Line 58: @@
 ====Examples====
-===Simple example===
+===Simple example: Compute DFT coefficients for Analog signals===
-Showing functionality of the command, using a diagram possibly to show output.
+One of the primary applications of the **Compute DFT Coefficients** command is to perform analysis of analog signals like force readings and EMGs. Here we compute the DFT coefficients for a folder containing EMG and force plate data.
-===Complex example===
+Start by identifying the name and location of the intended folder, this can be done in the **Signals and Events** tab.
-Combine with other commands and show step-by-step process for frequent use case
+{{:visual3d:documentation:pipeline:metric_commands:dft_tutorial_folder.png?250|}}
+Now, add the **Compute DFT Coefficients** command to your pipeline and modify it to include the intended folder, with the event sequence defined for the right stance phase. It should look something like this:
+<code>
+Metric_Compute_DFT_Coefficients
+/SIGNAL_TYPES=ANALOG
+/SIGNAL_FOLDER=ORIGINAL
+/SIGNAL_NAMES=EMG*
+! /SIGNAL_COMPONENTS=ALL_COMPONENTS
+/RESULT_FOLDER=DFT
+! /RESULT_SUFFIX=_DFT
+/EVENT_SEQUENCE=RON+ROFF
+! /EXCLUDE_EVENTS=
+! /START_FRAME=
+! /END_FRAME=
+! /BASE_FREQUENCY=
+! /NUM_FREQUENCIES=4
+;
+</code>
+Click **Execute Pipeline** and navigate back to the **Signals and Events** tab. You should now see a **DFT** folder within the **Metric** folder containing the coefficients for each processed signal.
+===Complex example===
+To see how this command can be used to compute EMG power data please go to [[Visual3D:Documentation:Pipeline:Metric_Commands:Metric_Compute_Power_From_DFT_Coefficients|Compute Power from DFT coefficients]].