^{ICustomFunction
Hierarchy Properties}

<sup>Type Library
TeeChartx

Description
This function is used to calculate values using your own formula.</sup>

^{Use the OnCalculate event to supply your values.}

^{The StartX property determines the first "X" value to use, and the NumPoints property means the number of times to call OnCalculate event.}

^{The Period property is the "step" to apply to "X" between each call to OnCalculate.}

^{Example [Visual Basic]:}

^{Private Sub TChart1_OnFunctionCalculate(ByVal SeriesIndex As Long, ByVal x As Double, y As Double)}

^{y = Sin(x / 10)}

^{End Sub}