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.