^{IAverageFunction.IncludeNulls
IAverageFunction}

<sup>property IncludeNulls: WordBool;

Type Library
TeeChartx

Description
The IncludeNulls property enables/disables the inclusion of NullValues in the calculation of the Average Function. The effect of this can be seen in the following example:</sup>

^{Example [Visual Basic]:}

^{With TChart1}

^{.AddSeries scLine}

^{.AddSeries scLine}

^{.AddSeries scLine}

^{For i = 0 To 20}

^{If i Mod 4 = 0 Then}

^{.Series(0).AddNullXY i, 0, ""}

^Else

^{.Series(0).AddXY i, Rnd(i) * 100, "", clTeeColor}

^{End If}

^{Next i}

^{.Series(1).SetFunction tfAverage}

^{.Series(1).DataSource = "Series0"}

^{.Series(1).FunctionType.asAverage.IncludeNulls = True}

^{.Series(1).CheckDataSource}

^{.Series(2).SetFunction tfAverage}

^{.Series(2).DataSource = "Series0"}

^{.Series(2).FunctionType.asAverage.IncludeNulls = False}

^{.Series(2).CheckDataSource}

^{End With}