^{IAxis.CalcXPosValue
IAxis}

<sup>function CalcXPosValue(SomeValue: Double): Integer;

Type Library
TeeChartx

Description
This function calculates the Horizontal coordinate in pixels of Value parameter.</sup>

^{Example [Visual Basic]:}

^{Our bottom axis has a Minimum of 20 and a Maximum of 1000.}

^{We need to draw a vertical line that represents the value: 500.}

^{Private Sub TChart1_OnAfterDraw()}

^{X = TChart1.Axis.Bottom.CalcXPosValue(500)}

^{TChart1.Canvas.MoveTo X, TChart1.Axis.Bottom.Position}

^{TChart1.Canvas.LineTo X, TChart1.Axis.Top.Position}

^{End Sub}