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--- visual3d:documentation:pipeline:signal_commands:first_derivative_of_a_signal [2024/06/19 12:53] – sgranger
+++ visual3d:documentation:pipeline:signal_commands:first_derivative_of_a_signal [2024/12/21 12:48] (current) – wikisysop
@@ Line 1: / Line 1: @@
-{{||
+====== First Derivative of a Signal ======
-|first_derivative.png\\ \\ **first_derivative**|                                        |
+See also: [[visual3d:documentation:pipeline:signal_commands:first_derivative]]
-|**/signal_types=**                                                                                   |the type of signal to be processed      |
-|**/signal_names=**                                                                                   |the names of the signals to be processed|
-|**/signal_folder=**                                                                                  |the name of the signal folder           |
-compute the first derivative at each point of a signal. the first and last data points become data_not_found (identified in the c3d file as a point reliability value of &endash;1).
+||
-derivatives are calculated using finite difference algorithms.
+|{{:First_Derivative.png}}\\ \\ **First_Derivative**|                                        |
+|**/Signal_Types=**                                                                                   |The type of signal to be processed      |
+|**/Signal_Names=**                                                                                   |The names of the signals to be processed|
+|**/Signal_Folder=**                                                                                  |The name of the signal folder           |
-given the signal:
+Compute the first derivative at each point of a signal. The first and last data points become DATA_NOT_FOUND (identified in the C3D file as a POINT Reliability value of &endash;1).
+Derivatives are calculated using Finite Difference Algorithms.
+Given the signal:
 x(ti) for i=1, 2, ..., n
-the first derivative is calculated using:
+The first derivative is calculated using:
-xdot(ti)= (x(ti+1)-x(ti-1))/( (ti+1)-(ti-1) )
+xDot(ti)= (x(ti+1)-x(ti-1))/( (ti+1)-(ti-1) )
-}}