ISmExponentialDistribution.A

Syntax

A: Double;

Description

The A property determines expected value of random value distribution.

Comments

Value of expected value should be greater than zero.

Example

To execute the example, the form must have the ChartBox component and the UiChart component which serves as the source for ChartBox.

Class OBJ18690Form: Form
    ChartBox1: ChartBox;
    UiChart1: UiChart;
    Exp: SmExponentialDistribution;
    Values: Array Of Double;
    Const Cnt = 100;

    Sub OBJ18690FormOnCreate(Sender: Object; Args: IEventArgs);
    Begin
        Exp := New SmExponentialDistribution.Create;
        Text := Exp.DisplayName;
        Exp.A := 100;
        Values := Exp.RandomVector(Cnt);
        UiChart1.PointCount := cnt;
    End Sub OBJ18690FormOnCreate;

    Sub UiChart1OnGetDataValue(Sender: Object; Args: IUiChartGetDataValueEventArgs);
    Begin
        If Args.PointIndex < Cnt Then
            Args.Value := Values[Args.PointIndex];
            Args.Result := True;
        End If;
End Sub UiChart1OnGetDataValue;

After executing the example a exponential distribution graph is built: