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--- visual3d:documentation:pipeline:signal_commands:merge_data [2024/06/19 13:38] – removed sgranger
+++ visual3d:documentation:pipeline:signal_commands:merge_data [2024/10/15 02:05] (current) – Cleaned up page. Still need to meet Pipeline Command format. wikisysop
@@ Line 1: / Line 1: @@
+===== Merge Data =====
+This command merges data from multiple signals into a single signal in one of two ways:
+  - either via **APPEND_TO_END**, appending one signal to the end of another signal, or
+  - via **MERGE_AS_NEW_COMPONENTS**, treating each original signal as a component of the new signal.
+<code>
+Merge_Data
+\SIGNAL_TYPES=
+\SIGNAL_FOLDER=
+\SIGNAL_NAMES=
+!\COMPONENT_SEQUENCE=
+!\RESULT_TYPES=DERIVED
+!\RESULT_FOLDERS=PROCESSED
+!\RESULT_NAME=
+!\MERGE_TYPE=APPEND_TO_END
+!\IGNORE_MISSING_SIGNALS=FALSE
+!\PRE_CLEAR_RESULT_SIGNAL=FALSE
+;
+</code>
+{{:Merge_Data.png}}
+==== Parameters ====
+**COMPONENT_SEQUENCE:** if empty, all components of the signals will be used
+**MERGE_TYPE:** APPEND_TO_END or MERGE_AS_NEW_COMPONENTS
+  - APPEND_TO_END append one signal to the end of another signal
+  - MERGE_AS_NEW_COMPONENTS treat each original signal as a component of the new signal
+**IGNORE_MISSING_SIGNALS:**
+**PRE_CLEAR_RESULT_SIGNAL:** Will delete the resulting signal prior to beginning
+==== Examples ====
+Below are some examples for using the Merge_Data command demonstrating both types of merges.
+=== Simple Example ===
+The command below will create a vector named **Vector** from 3 analog signals. This is an example of merging 3 signals into one signal.
+<code>
+Merge_Data
+/SIGNAL_NAMES=Analog1+Analog2+Analog3
+/SIGNAL_TYPES=ANALOG+ANALOG+ANALOG
+/SIGNAL_FOLDER=ORIGINAL+ORIGINAL+ORIGINAL
+/SIGNAL_COMPONENTS=0+0+0
+/RESULT_NAME=Vector
+/RESULT_TYPE=DERIVED
+/RESULT_FOLDER=PROCESSED
+/MERGE_TYPE=MERGE_AS_NEW_COMPONENTS
+;
+</code>
+=== Create Global List of all Instances ===
+<code>
+Select_Active_File
+/FILE_NAME=ALL_FILES
+;
+Merge_Data
+/SIGNAL_TYPES=METRIC
+/SIGNAL_FOLDER=PROCESSED
+/SIGNAL_NAMES=GLOBAL::List_of_Instances+L_Ankle_Stiffness
+/COMPONENT_SEQUENCE=ALL
+/RESULT_TYPES=METRIC
+! /RESULT_FOLDERS=PROCESSED
+/RESULT_NAME=GLOBAL::List_of_Instances
+! /MERGE_TYPE=APPEND_TO_END
+/IGNORE_MISSING_SIGNALS=FALSE
+/PRE_CLEAR_RESULT_SIGNAL=TRUE
+;
+</code>
+=== Add a column to a metric ===
+Another [[Metrics Example 3|example]] adds an indexing column to a metric (single values). This will allow the metric to be graphed.
+=== Merge for ASCII export ===
+The example found on [[Visual3D:Documentation:Pipeline:File_Commands:Export_Data_To_ASCII_File#Example_6:_Export_Concatenated_Metric_Signals|Exporting Concatenated Metric Signals]] will concatenate metrics signals prior to exporting to an ASCII file.
+When exporting, all signals are exported to separate columns in the exported file. For metric signals (e.g. signals with only one or two entries/frames) this can be inconvenient. It is not possible to concatenate the signals in the export command, but it is possible to concatenate the signals explicitly before export.