^{ITeeFunction.Period
ITeeFunction}

<sup>property Period: Double;

Type Library
TeeChartx

Description
The Period property controls how many points or X range(see note below) will trigger a new point calculation.</sup>

^{For example, AverageFunction uses the Period property to calculate a new average point each time the "Period" number of points or X range(see note below) is exceed.}

^{Period property Example}

^{For example, this code uses a TeeFunction to show one point for every 5 points in the Series2 datasource series:}

^Delphi

^{With TChart1 do}

^Begin

^{Series0.Pointer.Visible:= True; {Function}}

^{Series1.Pointer.Visible:= True; {Source Series}}

^{Series0.FunctionType.Period:= 5;}

^end;

^{Visual Basic}

^{With TChart2}

^{.Series( 2 ).asLine.Pointer.Visible = True}

^{.Series( 0 ).asLine.Pointer.Visible = True}

^{.Series( 2 ).FunctionType.Period = 5}

^{End With}