DataSeries.ToArray

Modified on 2016/12/28 11:38 by Eugene — Categorized as: Community Components

Syntax

public static double[] ToArray(this DataSeries ds)

Parameter Description

ds	DataSeries object

Description

LINQ provides a convenient and terse way to write SQL-like queries, allowing to filter, aggregate, group, sort and so on. While Wealth-Lab's DataSeries doesn't support LINQ natively, Community.Components users can employ the so called extension method .ToArray() to run LINQ queries on DataSeries.

There also is a companion method ToList with identical syntax.

Example

The following quick example shows the average price of a DataSeries by virtue of LINQ's Average function.

Note: Add reference to System.Core before using the sample code:

Example:

using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing;
using WealthLab;
using System.Linq;
/*** Requires installation of Community.Components Extension from www.wealth-lab.com > Extensions, 2012.10 or later***/

namespace WealthLab
{
	public class MyStrategy : WealthScript
	{
		protected override void Execute()
		{         
			var ds2List = Bars.Close.ToArray();
			var dsAverage = ds2List.Average( i => i );
			PrintDebug(dsAverage);
		}
	}
}