Help to finish an indicator, histogram not showing.

Created at 23 Mar 2022, 12:27

Joined 23.03.2022

Help to finish an indicator, histogram not showing.
23 Mar 2022, 12:27

I am new to c# and ctrader and have been trying to convert an indicator from prorealtime.

I have managed to create an indicator which shows two seperate emas on a chart and am struggling to add a histogram to the bottom based on the two emas.

In Prorealcode:

variables for ema (1); bars (1)

a=ExponentialAverage[ema](MedianPrice)
b=ExponentialAverage[ema](MedianPrice)

c=(a-b[bars])

p=0

return c as "histogram", p as "zero"

If anybody can give me some pointers or help in the final rearrangement of the coding to display this it would be greatly appreciated. I apologise for bad coding in advance, there are bits which wont make sense in here but it builds fine!!:

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

namespace cAlgo
{
    [Indicator(IsOverlay = true, TimeZone = TimeZones.UTC, AutoRescale = false, AccessRights = AccessRights.None)]
    public class EMAgradient : Indicator
    {
        [Parameter("Source")]
        public DataSeries Source { get; set; }

        [Parameter("Periods", DefaultValue = 1)]
        public int Periods { get; set; }

        [Parameter("Source1")]
        public DataSeries Source1 { get; set; }

        [Parameter("Periods1", DefaultValue = 50)]
        public int Periods1 { get; set; }

        [Output("periods", LineColor = "Turquoise")]

        public IndicatorDataSeries Result { get; set; }

        [Output("periods1", LineColor = "green")]

        public IndicatorDataSeries Result1 { get; set; }

        [Output("Gradiant", LineColor = "orange", PlotType = PlotType.Histogram)]

        public IndicatorDataSeries Result3 { get; set; }

        private double exp;
        private double exp1;
        private double exp3;

        protected override void Initialize()
        {
            exp = 2.0 / (Periods + 1);
            exp1 = 2.0 / (Periods1 + 1);
            exp3 = 1;
        }

        public override void Calculate(int index)
        {
            var previousValue = Result[index - 1];

            var previousValue1 = Result1[index - 1];

            var Gradiant = Result3[index - 0];

            if (double.IsNaN(previousValue))
            {
                Result[index] = Source[index];

                Result1[index] = Source[index];

                Result3[index] = Source[index];
            }
            else
            {
                Result[index] = Source[index] * exp + previousValue * (1 - exp);

                Result1[index] = Source[index] * exp1 + previousValue1 * (1 - exp1);

                Result3[index] = Result[index] - Result1[index] + (1 - exp3);

            }
        }
    }
}

@Sparkymark123

Replies

amusleh
24 Mar 2022, 09:24 ( Updated at: 24 Mar 2022, 09:25 )

Hi,

I'm not familiar with ProRealTime code, but I think the cTrader Automate equivalent of your posted code will look something like this:

using cAlgo.API;
using cAlgo.API.Indicators;

namespace cAlgo
{
    [Indicator(IsOverlay = false, TimeZone = TimeZones.UTC, AccessRights = AccessRights.None), Levels(0)]
    public class EMAGradient : Indicator
    {
        private ExponentialMovingAverage _ema;

        [Parameter("Period", DefaultValue = 14)]
        public int Period { get; set; }

        [Parameter("Bars #", DefaultValue = 1)]
        public int BarsNumber { get; set; }

        [Parameter("Source")]
        public DataSeries Source { get; set; }

        [Output("Main", IsHistogram = true, PlotType = PlotType.Histogram, Thickness = 3)]
        public IndicatorDataSeries Result { get; set; }

        protected override void Initialize()
        {
            _ema = Indicators.ExponentialMovingAverage(Source, Period);
        }

        public override void Calculate(int index)
        {
            Result[index] = _ema.Result[index] - _ema.Result[index - BarsNumber];
        }
    }
}

@amusleh

Sparkymark123
27 Mar 2022, 12:08

Thank you

Many thanks for your help with this.

Do you contract for paid work in creating cbots? I may need something creating once I have the design for it figured properly?

I also have another problem with some code not working correctly - I added a trailing stop and it works with backtest but then doesn`t place any trades...

I`ll put a post in the help section for that though.

Kind Regards.

amusleh said:

Hi,

I'm not familiar with ProRealTime code, but I think the cTrader Automate equivalent of your posted code will look something like this:

using cAlgo.API;
using cAlgo.API.Indicators;

namespace cAlgo
{
    [Indicator(IsOverlay = false, TimeZone = TimeZones.UTC, AccessRights = AccessRights.None), Levels(0)]
    public class EMAGradient : Indicator
    {
        private ExponentialMovingAverage _ema;

        [Parameter("Period", DefaultValue = 14)]
        public int Period { get; set; }

        [Parameter("Bars #", DefaultValue = 1)]
        public int BarsNumber { get; set; }

        [Parameter("Source")]
        public DataSeries Source { get; set; }

        [Output("Main", IsHistogram = true, PlotType = PlotType.Histogram, Thickness = 3)]
        public IndicatorDataSeries Result { get; set; }

        protected override void Initialize()
        {
            _ema = Indicators.ExponentialMovingAverage(Source, Period);
        }

        public override void Calculate(int index)
        {
            Result[index] = _ema.Result[index] - _ema.Result[index - BarsNumber];
        }
    }
}

@Sparkymark123

amusleh
28 Mar 2022, 09:31

RE: Thank you

dionysian.apostle said:

Many thanks for your help with this.

Do you contract for paid work in creating cbots? I may need something creating once I have the design for it figured properly?

I also have another problem with some code not working correctly - I added a trailing stop and it works with backtest but then doesn`t place any trades...

I`ll put a post in the help section for that though.

Kind Regards.

amusleh said:
Hi,

I'm not familiar with ProRealTime code, but I think the cTrader Automate equivalent of your posted code will look something like this:
using cAlgo.API;
using cAlgo.API.Indicators;

namespace cAlgo
{
    [Indicator(IsOverlay = false, TimeZone = TimeZones.UTC, AccessRights = AccessRights.None), Levels(0)]
    public class EMAGradient : Indicator
    {
        private ExponentialMovingAverage _ema;

        [Parameter("Period", DefaultValue = 14)]
        public int Period { get; set; }

        [Parameter("Bars #", DefaultValue = 1)]
        public int BarsNumber { get; set; }

        [Parameter("Source")]
        public DataSeries Source { get; set; }

        [Output("Main", IsHistogram = true, PlotType = PlotType.Histogram, Thickness = 3)]
        public IndicatorDataSeries Result { get; set; }

        protected override void Initialize()
        {
            _ema = Indicators.ExponentialMovingAverage(Source, Period);
        }

        public override void Calculate(int index)
        {
            Result[index] = _ema.Result[index] - _ema.Result[index - BarsNumber];
        }
    }
}

Hi,

You can post a job request or contact one of our consultants.

@amusleh

Copyright © 2024 Spotware Systems Ltd. All rights reserved.
The services provided by Spotware Systems Ltd. are not available to citizens or residents of the USA. Neither is the information on our websites directed toward soliciting citizens or residents of the USA.