^{IValueList.Locate
IValueList}

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

Type Library
TeeChartx

Description
This new function returns the corresponding point index which has the specified "Value". You can use it to calculate X co-ordinates based on Y values or vice-versa:</sup>

^{Example [Visual Basic]:}

^{'Add some series points}

^{Private Sub Command1_Click()}

^{With TChart1.Series( 0 )}

^{.AddXY (DateValue("1996,1,1")), 3, "", clTeeColor}

^{.AddXY (DateValue("1996,3,1")), 8, "", clTeeColor}

^{.AddXY (DateValue("1996,5,1")), 6, "", clTeeColor}

^{.AddXY (DateValue("1996,7,1")), 7, "", clTeeColor}

^{.AddXY (DateValue("1996,9,1")), 2, "", clTeeColor}

^{.AddXY (DateValue("1996,11,1")), 9, "", clTeeColor}

^{End With}

^{End Sub}

^{'Find the point value !}

^{Private Sub Command2_Click()}

^{Dim tmp As Integer}

^{tmp = TChart1.Series( 0 ).XValues.Locate(DateValue("1996,9,1"))}

^{If tmp <> -1 Then}

^{MsgBox (Str$(TChart1.Series( 0 ).YValues.Value(tmp)))}

^{End If}

^{End Sub}