FFEphemProperties.ColumnInterpolators Property

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Description

The interpolators used for the columns in the ephemeris. The indices of this array correspond to the indices of the columns added to the ephemeris object (e.g. index 0 holds the interpolator for the 1st column of the ephemeris, index 1 for the 2nd column, etc.). Note that the 0 index of the ColumnInterpolators array contains the interpolator for the Epoch and thus cannot be changed. Only works for FreeFlyer Ephemeris Version 2.0 and higher.

0 = 5th Order Spline

1 = 8th Order Lagrange

2 = 10th Order Lagrange

3 = 0th Order Interpolation

 

Timing Precision Mode

This page describes functionality in millisecond timing precision mode.

 

Attributes

Type:

Array of integer (size = 7)

Access:

read/write

Default Value:

{ }

Valid Values:

Value

Label

0

5th Order Spline

1

8th Order Lagrange

2

10th Order Lagrange

3

0th Order Interpolation

 

Syntax

myVariable1 = myFFEphemProperties1.ColumnInterpolators[0];

 

myFFEphemProperties1.ColumnInterpolators[0] = myVariable1;

 

Example 1

If changing the interpolators for all the columns, be careful not to alter the interpolator for the first column. In this example, notice how only the interpolators in the last 6 columns of the ephemeris are being changed.

 

Ephemeris FFEphemV2;

 

FFEphemV2.FFEphemProperties.FormatVersion = 2;

FFEphemV2.WritePosVel = 0;

 

FFEphemV2.FFEphemProperties.AddColumn("X","X");

FFEphemV2.FFEphemProperties.AddColumn("Y","Y");

FFEphemV2.FFEphemProperties.AddColumn("Z","Z");

FFEphemV2.FFEphemProperties.AddColumn("VX","VX");

FFEphemV2.FFEphemProperties.AddColumn("VY","VY");

FFEphemV2.FFEphemProperties.AddColumn("VZ","VZ");

 

FFEphemV2.FFEphemProperties.ColumnInterpolators[1:6] = {1, 1, 1, 2, 2, 2};

 

/////// ---- or ---- ///////

 

Variable i;

Alias iprArray = FFEphemV2.FFEphemProperties.ColumnInterpolators;

 

For i = 1 to iprArray.Count - 1 step 1;

 iprArray[i] = 1;

End;

 

 

 

See also

FFEphemProperties Object

Working with Ephemerides