The Data window contains values that are inputs to the filtering algorithm. It is an O-Matrix editor and as such you can perform standard editing commands within the window and using the Edit option from the O-Matrix menu bar. The fields in the Data window must appear in the same order as they are listed below:

The first line of the Data window must consist of this text. The value on the following line defines the bad data value for KBF. Values in the file specified by the DATA VALUES field that have the bad data value will be ignored.

The third line of the Data window must consist of this text. The value on the following line specifies the initial state estimate. The number of values on this line determines the number of elements in the State vector; i.e.,

The fifth line of the Data window must consist of this text. The initial state estimate has a covariance matrix that specifies how accurately it approximates the initial state. The values of this covariance matrix must start at line six and continue to line

`6 + `*nx* - 1

where *nx*

is the number of
elements in the State vector.
Each of these lines must contain *nx*

values.
Because this is a covariance matrix it must be
The line following the last line in the covariance matrix must contain this text. The line after that contains one value for each element of a data vector. If a value is zero, there is no modulo for the corresponding element of the data vector. If the value is not zero, it is the modulo for the corresponding element of the data vector. For example, if one element of the data vector is an angle measured in degrees, the corresponding modulo value should be

`360`

.
The line following the modulo values must consist of this text. The name of the file containing the data values follows directly below. When a study is loaded, the values in this field are copied from the DataRecord to the file DATA.VAL in the

The following is a picture of the Data window for the example in

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In addition, the file DATA.VAL in the
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19.372 107.759

22.161 104.008

20.752 104.096

21.608 108.792

14.187 114.778

09.812 120.034

06.191 124.459

08.104 121.789

10.782 121.566

15.898 115.941