如何创建交易时段和支撑/阻力指标

cTrader Algo API提供了创建在交易图表上绘制矩形、线、三角形、云和其他对象所需的类型。特别是矩形，广泛用于突出显示重要时段、整理区域和支撑/阻力水平。

在本文和相应的视频中，您将学习如何在交易品种图表上绘制表示交易时段和支撑/阻力水平的矩形。

创建交易时段指标

有四个主要交易时段：悉尼、东京、伦敦和纽约。每个时段在波动性和活动水平方面都是独特的。通过监控这些时段及其重叠，交易者可以知道特定资产的交易时间，并抓住机会。

在本例中，我们希望创建一个在图表上绘制交易时段的指标。

在cTrader Algo中，导航到指标选项卡并点击新建按钮。在文本字段中输入名称，然后点击创建。

开始在代码编辑器中修改指标。首先，使其成为重叠指标。

1	`[Indicator(AccessRights = AccessRights.None, IsOverlay = true)]`

编写代码以在图表上绘制表示伦敦时段的矩形。

TimeSpan londonOpen = TimeZoneInfo.ConvertTimeToUtc(new DateTime(Server.Time.Year, Server.Time.Month, Server.Time.Day, 9, 0, 0),
TimeZoneInfo.FindSystemTimeZoneById("Greenwich Standard Time")).TimeOfDay;
TimeSpan londonClose = TimeZoneInfo.ConvertTimeToUtc(new DateTime(Server.Time.Year, Server.Time.Month, Server.Time.Day, 18, 0, 0),
TimeZoneInfo.FindSystemTimeZoneById("Greenwich Standard Time")).TimeOfDay;

Chart.DrawRectangle("London Session ", Server.Time.Date.Add(londonOpen), Chart.TopY, Server.Time.Date.Add(londonClose), Chart.BottomY, 
Color.FromArgb(50, 0, 50, 255)).IsFilled = true;

按下Ctrl+B或点击构建，然后通过点击添加实例将指标添加到图表中。

伦敦时段矩形可以在图表上看到。

返回代码编辑器并添加剩余三个交易时段的代码。

TimeSpan nyOpen = TimeZoneInfo.ConvertTimeToUtc(new DateTime(Server.Time.Year, Server.Time.Month, Server.Time.Day, 9, 0, 0),
TimeZoneInfo.FindSystemTimeZoneById("Eastern Standard Time")).TimeOfDay;
TimeSpan nyClose = TimeZoneInfo.ConvertTimeToUtc(new DateTime(Server.Time.Year, Server.Time.Month, Server.Time.Day, 18, 0, 0),
TimeZoneInfo.FindSystemTimeZoneById("Eastern Standard Time")).TimeOfDay;

Chart.DrawRectangle("NY Session ", Server.Time.Date.Add(nyOpen), Chart.TopY, Server.Time.Date.Add(nyClose), Chart.BottomY,
Color.FromArgb(50, 255, 50, 0)).IsFilled = true;

TimeSpan sydneyOpen = TimeZoneInfo.ConvertTimeToUtc(new DateTime(Server.Time.Year, Server.Time.Month, Server.Time.Day, 9, 0, 0),
TimeZoneInfo.FindSystemTimeZoneById("AUS Eastern Standard Time")).TimeOfDay;
TimeSpan sydneyClose = TimeZoneInfo.ConvertTimeToUtc(new DateTime(Server.Time.Year, Server.Time.Month, Server.Time.Day, 18, 0, 0),
TimeZoneInfo.FindSystemTimeZoneById("AUS Eastern Standard Time")).TimeOfDay;

Chart.DrawRectangle("Sydney Session ", Server.Time.Date.Add(sydneyOpen).AddDays(-1), Chart.TopY, Server.Time.Date.Add(sydneyClose),
Chart.BottomY, Color.FromArgb(50, 50, 255, 0)).IsFilled = true;

TimeSpan tokyoOpen = TimeZoneInfo.ConvertTimeToUtc(new DateTime(Server.Time.Year, Server.Time.Month, Server.Time.Day, 9, 0, 0),
TimeZoneInfo.FindSystemTimeZoneById("Tokyo Standard Time")).TimeOfDay;
TimeSpan tokyoClose = TimeZoneInfo.ConvertTimeToUtc(new DateTime(Server.Time.Year, Server.Time.Month, Server.Time.Day, 18, 0, 0),
TimeZoneInfo.FindSystemTimeZoneById("Tokyo Standard Time")).TimeOfDay;

Chart.DrawRectangle("Tokio Session ", Server.Time.Date.Add(tokyoOpen), Chart.TopY, Server.Time.Date.Add(tokyoClose), Chart.BottomY,
Color.FromArgb(50, 0, 50, 255)).IsFilled = true;

您可以复制以下完整代码：

using System;
using cAlgo.API;
using cAlgo.API.Collections;
using cAlgo.API.Indicators;
using cAlgo.API.Internals;

namespace cAlgo
{
    [Indicator(AccessRights = AccessRights.None, IsOverlay = true)]
    public class TradingSessions : Indicator
    {
        protected override void Initialize()
        {

        }

        public override void Calculate(int index)
        {
            TimeSpan londonOpen = TimeZoneInfo.ConvertTimeToUtc(new DateTime(Server.Time.Year, Server.Time.Month, Server.Time.Day, 9, 0, 0),
            TimeZoneInfo.FindSystemTimeZoneById("Greenwich Standard Time")).TimeOfDay;
            TimeSpan londonClose = TimeZoneInfo.ConvertTimeToUtc(new DateTime(Server.Time.Year, Server.Time.Month, Server.Time.Day, 18, 0, 0),
            TimeZoneInfo.FindSystemTimeZoneById("Greenwich Standard Time")).TimeOfDay;

            Chart.DrawRectangle("London Session ", Server.Time.Date.Add(londonOpen), Chart.TopY, Server.Time.Date.Add(londonClose), Chart.BottomY, 
            Color.FromArgb(50, 0, 50, 255)).IsFilled = true;

            TimeSpan nyOpen = TimeZoneInfo.ConvertTimeToUtc(new DateTime(Server.Time.Year, Server.Time.Month, Server.Time.Day, 9, 0, 0),
            TimeZoneInfo.FindSystemTimeZoneById("Eastern Standard Time")).TimeOfDay;
            TimeSpan nyClose = TimeZoneInfo.ConvertTimeToUtc(new DateTime(Server.Time.Year, Server.Time.Month, Server.Time.Day, 18, 0, 0),
            TimeZoneInfo.FindSystemTimeZoneById("Eastern Standard Time")).TimeOfDay;

            Chart.DrawRectangle("NY Session ", Server.Time.Date.Add(nyOpen), Chart.TopY, Server.Time.Date.Add(nyClose), Chart.BottomY,
            Color.FromArgb(50, 255, 50, 0)).IsFilled = true;

            TimeSpan sydneyOpen = TimeZoneInfo.ConvertTimeToUtc(new DateTime(Server.Time.Year, Server.Time.Month, Server.Time.Day, 9, 0, 0),
            TimeZoneInfo.FindSystemTimeZoneById("AUS Eastern Standard Time")).TimeOfDay;
            TimeSpan sydneyClose = TimeZoneInfo.ConvertTimeToUtc(new DateTime(Server.Time.Year, Server.Time.Month, Server.Time.Day, 18, 0, 0),
            TimeZoneInfo.FindSystemTimeZoneById("AUS Eastern Standard Time")).TimeOfDay;

            Chart.DrawRectangle("Sydney Session ", Server.Time.Date.Add(sydneyOpen).AddDays(-1), Chart.TopY, Server.Time.Date.Add(sydneyClose),
            Chart.BottomY, Color.FromArgb(50, 50, 255, 0)).IsFilled = true;

            TimeSpan tokyoOpen = TimeZoneInfo.ConvertTimeToUtc(new DateTime(Server.Time.Year, Server.Time.Month, Server.Time.Day, 9, 0, 0),
            TimeZoneInfo.FindSystemTimeZoneById("Tokyo Standard Time")).TimeOfDay;
            TimeSpan tokyoClose = TimeZoneInfo.ConvertTimeToUtc(new DateTime(Server.Time.Year, Server.Time.Month, Server.Time.Day, 18, 0, 0),
            TimeZoneInfo.FindSystemTimeZoneById("Tokyo Standard Time")).TimeOfDay;

            Chart.DrawRectangle("Tokyo Session ", Server.Time.Date.Add(tokyoOpen), Chart.TopY, Server.Time.Date.Add(tokyoClose), Chart.BottomY,
            Color.FromArgb(50, 0, 50, 255)).IsFilled = true;
        }
    }
}

重新构建指标，然后检查图表以查看所有交易时段的表示。

创建一个支撑/阻力指标

我们将创建一个使用分形在图表上绘制阻力和支撑区域的指标。

使用相同的步骤创建一个新指标，但为其分配一个不同的名称。

通过将 IsOverlay 设置为 true 来开始修改。

1	`[Indicator(AccessRights = AccessRights.None, IsOverlay = true)]`

当高值高于两侧相邻的两个柱时，绘制分形阻力区域。该区域是分形蜡烛的高价和收盘价之间的区域。阻力区域有助于识别看涨趋势可能停止并反转的区域，从而产生交易机会。

编写绘制阻力区域的代码。

if (Bars.HighPrices[index - 2] > Bars.HighPrices[index - 1] && Bars.HighPrices[index - 2] > Bars.HighPrices[index] &&
Bars.HighPrices[index - 2] > Bars.HighPrices[index - 3] && Bars.HighPrices[index - 2] > Bars.HighPrices[index - 4])
{
    Chart.DrawRectangle(Bars.OpenTimes[index - 2].ToString(), Bars.OpenTimes[index - 2], Bars.HighPrices[index - 2], Bars.OpenTimes[index - 2].AddDays(1),
    Bars.ClosePrices[index - 2], Color.FromArgb(50, Color.Green)).IsFilled = true;
}

与阻力区域不同，支撑区域有助于识别看跌趋势可能停止并反转的区域。这些区域可以转化为买入信号。

编写绘制支撑区域的代码。

if (Bars.LowPrices[index - 2] < Bars.LowPrices[index - 1] && Bars.LowPrices[index - 2] < Bars.LowPrices[index] &&
Bars.LowPrices[index - 2] < Bars.LowPrices[index - 3] && Bars.LowPrices[index - 2] < Bars.LowPrices[index - 4])
{
    Chart.DrawRectangle(Bars.OpenTimes[index - 2].ToString(), Bars.OpenTimes[index - 2], Bars.ClosePrices[index - 2], Bars.OpenTimes[index - 2].AddDays(1),
    Bars.LowPrices[index - 2], Color.FromArgb(50, Color.Red)).IsFilled = true;
}

您可以复制以下完整代码：

using System;
using cAlgo.API;
using cAlgo.API.Collections;
using cAlgo.API.Indicators;
using cAlgo.API.Internals;

namespace cAlgo
{
    [Indicator(AccessRights = AccessRights.None, IsOverlay = true)]
    public class SupportResistanceExample : Indicator
    {
        protected override void Initialize()
        {

        }

        public override void Calculate(int index)
        {
            if (Bars.HighPrices[index - 2] > Bars.HighPrices[index - 1] && Bars.HighPrices[index - 2] > Bars.HighPrices[index] &&
            Bars.HighPrices[index - 2] > Bars.HighPrices[index - 3] && Bars.HighPrices[index - 2] > Bars.HighPrices[index - 4])
            {
                Chart.DrawRectangle(Bars.OpenTimes[index - 2].ToString(), Bars.OpenTimes[index - 2], Bars.HighPrices[index - 2], Bars.OpenTimes[index - 2].AddDays(1),
                Bars.ClosePrices[index - 2], Color.FromArgb(50, Color.Green)).IsFilled = true;
            }

            if (Bars.LowPrices[index - 2] < Bars.LowPrices[index - 1] && Bars.LowPrices[index - 2] < Bars.LowPrices[index] &&
            Bars.LowPrices[index - 2] < Bars.LowPrices[index - 3] && Bars.LowPrices[index - 2] < Bars.LowPrices[index - 4])
            {
                Chart.DrawRectangle(Bars.OpenTimes[index - 2].ToString(), Bars.OpenTimes[index - 2], Bars.ClosePrices[index - 2], Bars.OpenTimes[index - 2].AddDays(1),
                Bars.LowPrices[index - 2], Color.FromArgb(50, Color.Red)).IsFilled = true;
            }
        }
    }
}

构建指标并将实例添加到图表中。您应该在图表上看到支撑和阻力区域。

本文展示了如何使用矩形等有用对象创建指标，这些对象可用于表示图表上的交易时段和支撑/阻力水平。