[SerializableAttribute]
public class ChartLituusSpiral : ChartSpiralObjectBase

<SerializableAttribute> _
Public Class ChartLituusSpiral _
	Inherits ChartSpiralObjectBase

[SerializableAttribute]
public ref class ChartLituusSpiral : public ChartSpiralObjectBase

According to Robert C. Yates 1952, the Lituus curve is studied by Roger Cotes in 1722. It is named after an ancient Roman trumpet called lituus. The curve is asymptotic to the positive x-axis, and the other end spiral in towards the pole. As theta approachs infinity, the curve approaches the origin.

Create a Lituus spiral programmatically (C#)

CopyC#

// Setup our X coordinates.
DateTime startDate = DateTime.Now;
DateTime lastWeek = startDate.AddDays(-7);

// Create the Lituus Spiral object
ChartLituusSpiral spiral = new ChartLituusSpiral(new ChartPoint(startDate, 20.00), new ChartPoint(lastWeek, 25.00));

// Add this object to the chart.  "symbol" would equal the current symbol object in the system.
ChartObjects.Add(symbol, spiral);

System..::.Object
  RightEdge.Common.ChartObjects..::.ChartObjectBase
    RightEdge.Common.ChartObjects..::.ChartSpiralObjectBase
      RightEdge.Common.ChartObjects..::.ChartLituusSpiral