Table of Contents
Interpolate
If there are unreliable data points (residuals < 0) in any signal it is possible to interpolate these gaps in the data using a spline interpolation.
Visual3D Version 4
The interpolation procedure performs a least-squares fit of an nth order polynomial to k data points.
| (x1,t1),…,(xk,tk) | k >= polynomial order + 1 | |
| Interpolate | |
| /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 |
| /Num_Fit= | The number of frames of data before and after the “gap” that are used to calculate the coefficients of the polynomial. |
| /Polynomial_Order= | The order of the polynomial used. |
| /Maximum_Gap= | The maximum number of frames of data that can be replaced with interpolated values. |
Dialog that pops up when pipeline selection is edited by double clicking with the left mouse button.
Using an expression in Version 4
This is considerable more klunky because it requires 3 commands instead of 1:
Evaluate_Expression /EXPRESSION=0.1*PARAMETERS::POINT::RATE /RESULT_NAME=RATE /RESULT_TYPE=METRIC /RESULT_FOLDER=TEMP ; Set_Pipeline_Parameter_To_Data_Value /PARAMETER_NAME=GAP /SIGNAL_TYPES=METRIC /SIGNAL_NAMES=RATE /SIGNAL_FOLDER=TEMP ! /SIGNAL_COMPONENTS=ALL_COMPONENTS ; Interpolate /SIGNAL_TYPES=TARGET ! /SIGNAL_NAMES= ! /SIGNAL_FOLDER=ORIGINAL ! /RESULT_SUFFIX= ! /RESULT_FOLDER=PROCESSED /MAXIMUM_GAP=::GAP ! /NUM_FIT=3 ! /POLYNOMIAL_ORDER=3 ;
Visual3D Version 5
In version 5 we permit the three numerical parameters to have expressions.
Interpolate
/SIGNAL_TYPES=TARGET
! /SIGNAL_NAMES=
! /SIGNAL_FOLDER=ORIGINAL
! /RESULT_SUFFIX=
! /RESULT_FOLDER=PROCESSED
/MAXIMUM_GAP=0.1*PARAMETERS::POINT::RATE
! /NUM_FIT=3
! /POLYNOMIAL_ORDER=3
;
Using an expression in version 5
Define the maximum size of the gap based on the POINT frame rate.
