ISmSlideSmoothing.MissingData

Syntax

Description

The MissingData property determines missing data treatment parameters.

Comments

By default missing data is not treated.

Example

Add a link to the Stat system assembly.

Sub UserProc;
Var
    Slide: SmSlideSmoothing;
    s: Array[10] Of Double;
    res, i: Integer;
Begin
    Slide := New SmSlideSmoothing.Create;
    // Set variable values
    s[0] := 670.2; s[1] := 576.06;
    s[2] := 856.9; s[3] := Double.Nan;
    s[4] := 885.4;  s[5] := 1011.8;
    s[6] := 995.44; s[7] := 1064.74;
    s[8] := 780.85; s[9] := Double.Nan;
    // Determine source series parameters
    Slide.Serie.Value := s;
    // Define parameters of sample period
    Slide.ModelPeriod.FirstPoint := 1;
    Slide.ModelPeriod.LastPoint := 10;
    // Determine missing data treatment method
    Slide.MissingData.Method := MissingDataMethod.SampleAverage;
    // Determine the time interval, at which element average will be determined
    Slide.Width := 3;
    // Determine whether moving average will be centered
    Slide.CenterMovingAverage := True;
    // Execute calculation and display results
    res := Slide.Execute;
    If res <> 0 Then
        Debug.WriteLine(Slide.Errors);
        Else
            Debug.WriteLine("Modeling series");
            For i := 0 To Slide.Fitted.Length - 1 Do
                Debug.WriteLine(" " + (i + 1).ToString + ". " + Slide.Fitted[i].ToString);
            End For;
            Debug.WriteLine("Residuals");
            For i := 0 To Slide.Residuals.Length - 1 Do
                Debug.WriteLine(" " + (i + 1).ToString + ". " + Slide.Residuals[i].ToString);
            End For;
            Debug.WriteLine("Durbin-Watson statistic: " + Slide.SummaryStatistics.DW.ToString);
    End If;
End Sub UserProc;

After executing the example the console window displays the modeling series, residuals, and summary statistics.