Measure the shadow length, and as percentage of entire candle by Boris Sachakov

Boris Sachakov INVESTOR

| Reward Discussion

I am trying to determine the length of the candle and its shadows and also the shadow as percentage of entire length. I am aware of CandleSettingType and CandleRangeType Enumerations, but 1st - not sure how to code them; and 2nd - I want to be able to find out certain info, such as: Upper shadow - no more than 15% of entire length and others like this.

I also found GetUpperShadow, GetHighLowRange methods in CandlestickPattern class. But again I don't know if and how to apply them properly.

I need help, please, to figure out which way to code to get the info I need, and also help with that code. Thanks in advance.

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Boris Sachakov

Accepted Answer

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Jared Broad

Please attach a post / contribution of what you have attempted Boris. Discussions must meet minimum quality standards which show you've made an effort to achieve your goals. Communities work best when the members contribute - posts just asking for others to code your algorithm for you will be removed.

Boris Sachakov

1.8k ,

My appologies.

Here's my work so far. It looks very simplistic and I will continue practicing to learn to be able to use the methods I mentioned above.

I think Bactesting is down. So I am not able to attach it.

Boris Sachakov

1.8k ,

Here is my project. Since Backtest is still queuing, not able to attach it the proper way. Please critique my work.

using System;

using System.Globalization;

using QuantConnect.Data;

using QuantConnect.Data.Market;

using QuantConnect.Indicators.CandlestickPatterns;

namespace QuantConnect.Algorithm.CSharp

{

    public class CandlestickCloseMarUppShad5minESData : QCAlgorithm

    {

        private string _symbol = "ES";

        private ClosingMarubozu _pattern5 = new ClosingMarubozu();      

        /// <summary>

        /// Initialise the data and resolution required, as well as the cash and start-end dates for your algorithm. All algorithms must be initialized.

        /// </summary>

        public override void Initialize()

        {

            SetStartDate(2016, 01, 04);  //Set Start Date

            SetEndDate(2016, 01, 04);    //Set End Date

            SetCash(100000);             //Set Strategy Cash

            AddData<CloseMaribos>(_symbol);

            _pattern5 = CandlestickPatterns.ClosingMarubozu(_symbol);          

        }

        /// <summary>

        /// OnData event is the primary entry point for your algorithm. Each new data point will be pumped in here.

        /// </summary>       

        public void OnData(CloseMaribos data)

        {

            if (data.Time.TimeOfDay < new TimeSpan(9, 35, 00) ||

                 data.Time.TimeOfDay > new TimeSpan(12, 00, 00))

            {

                return;

            }

            else

            {

                if (_pattern5 == 1)// Bullish ClosingMarubozu

                {                   

                    Debug(Time + " -> found Bullish ClosingMarubozu\n" +

                        "Upper Shadow = " + (data.UpperShadow/data.HighLow * 100) + "%");             

                }               

            }

        }

    }

    public class CloseMaribos : TradeBar

    {

        public decimal UpperShadow { get; set; }

        public decimal LowerShadow { get; set; }

        public decimal HighLow { get; set; }

        public decimal RealBody { get; set; }

        /// <summary>

        /// Return the URL external source for the data: QuantConnect will download it an read it line by line automatically:

        /// </summary>

        public override SubscriptionDataSource GetSource(SubscriptionDataConfig config, DateTime date, bool isLiveMode)

        {

            return new SubscriptionDataSource("https://www.dropbox.com/s/nybrjl87y877flp/ES%202016-01-04%20-%202016-12-19%20-%20EST.csv?dl=1", SubscriptionTransportMedium.RemoteFile);

        }

        /// <summary>

        /// Convert each line of the file above into an object.

        /// </summary>

        public override BaseData Reader(SubscriptionDataConfig config, string line, DateTime date, bool isLiveMode)

        {

            CloseMaribos cmBar = new CloseMaribos();

            try

            {

                var data = line.Split(',');

                //Required.

                cmBar.Symbol = "ES";

                cmBar.Time = DateTime.ParseExact(data[0] + data[1], "yyyyMMddhhmmss", CultureInfo.InvariantCulture);

                //User configured / optional data on each bar:

                cmBar.Open = Convert.ToDecimal(data[2], CultureInfo.InvariantCulture);

                cmBar.High = Convert.ToDecimal(data[3], CultureInfo.InvariantCulture);

                cmBar.Low = Convert.ToDecimal(data[4], CultureInfo.InvariantCulture);

                cmBar.Close = Convert.ToDecimal(data[5], CultureInfo.InvariantCulture);

                cmBar.Volume = Convert.ToInt32(data[6], CultureInfo.InvariantCulture);

                //This is the value the engine uses for portfolio calculations

                cmBar.Value = cmBar.Close;

                if (cmBar.Close > cmBar.Open)

                {

                    cmBar.UpperShadow = (cmBar.High - cmBar.Close);

                    cmBar.LowerShadow = (cmBar.Open - cmBar.Low);

                    cmBar.RealBody = (cmBar.Close - cmBar.Open);

                }

                else

                {

                    cmBar.UpperShadow = (cmBar.High - cmBar.Open);

                    cmBar.LowerShadow = (cmBar.Close - cmBar.Low);

                    cmBar.RealBody = (cmBar.Open - cmBar.Close);

                }

                cmBar.HighLow = (cmBar.High - cmBar.Low);               

            }

            catch (Exception exception)

            {

                Console.WriteLine(exception.Message);

            }

            return cmBar;

        }

    }

}

Boris Sachakov

1.8k ,

Backtesting is back on. So here's my complete work so far.

Alexandre Catarino

GetUpperShadow and GetHighLowRange methods are protected members in CandlestickPattern class: they are only accessible within its class and by derived class instances. If we want to use them, we need to create a custom indicator that derives from CandlestickPattern.

At the current stage of your strategy development, you should keep your algorithm as simple as possible.

Its simpler to write 10 lines of code to compute the shadow relative length than writing a custom indicator. That is what you did. Your current solution looks very good!

Boris Sachakov

1.8k ,

@Alexandre,

Thanks for your comments and guidance.

Boris Sachakov INVESTOR

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