Larry Williams Large Trading Index

Have A Nice day.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using cAlgo.API;
using cAlgo.API.Collections;
using cAlgo.API.Indicators;
using cAlgo.API.Internals;

namespace cAlgo
{
    [Indicator(AccessRights = AccessRights.None)]
    public class LarryWilliamsLargeTradingIndex : Indicator
    {
        [Parameter(DefaultValue = 8)]
        public int Period { get; set; }
        [Parameter(DefaultValue = 8)]
        public MovingAverageType MaType { get; set; }

        [Output("NoValue", LineColor = "Gray", IsHistogram = false, PlotType = PlotType.DiscontinuousLine, Thickness = 2)]
        public IndicatorDataSeries NoValue { get; set; }
        [Output("BullishValue", LineColor = "Green", IsHistogram = false, PlotType = PlotType.DiscontinuousLine, Thickness = 2)]
        public IndicatorDataSeries BullishValue { get; set; }
        [Output("BearishValue", LineColor = "Red", IsHistogram = false, PlotType = PlotType.DiscontinuousLine, Thickness = 2)]
        public IndicatorDataSeries BearishValue { get; set; }

        [Output("Middle", LineColor = "FF737373", Thickness = 1, LineStyle = LineStyle.Dots)]
        public IndicatorDataSeries Middle { get; set; }

        private MovingAverage ma1;
        private MovingAverage ma2;
        private AverageTrueRange averageTrueRange;

        private IndicatorDataSeries resMa;
        private IndicatorDataSeries atr;
        private IndicatorDataSeries sourceMa;


        protected override void Initialize()
        {
            sourceMa = CreateDataSeries();
            atr = CreateDataSeries();
            resMa = CreateDataSeries();
            ma1 = Indicators.MovingAverage(sourceMa, Period, MaType);
            averageTrueRange = Indicators.AverageTrueRange(Period, MaType);
        }

        public override void Calculate(int index)
        {
            // Level
            Middle[index] = 50;

            // Source of calculation ma
            sourceMa[index] = Bars.ClosePrices.Last(0) - Bars.ClosePrices.Last(Period);
            // calculation ATR

            atr[index] = averageTrueRange.Result[index];
            //LarryWilliams Calculation
            resMa[index] = ma1.Result[index] / atr[index] * 50 + 50;

            //Output
            NoValue[index] = resMa[index];
            BearishValue[index] = resMa[index] < 50 ? resMa[index] : double.NaN;
            BullishValue[index] = resMa[index] > 50 ? resMa[index] : double.NaN;
   
            // Repaint Calculation UNCOMMENT FOR SEE (The color is make in function of < or > 50, It's juste a coloration of previous)
            if (resMa[index] > 50)
            {
                BullishValue[index] = resMa[index];

                if (resMa[index - 1] < 50)
                    BullishValue[index - 1] = resMa[index - 1];

                BearishValue[index] = double.NaN;
            }
            if (resMa[index] < 50)
            {
                BearishValue[index] = resMa[index];

                if (resMa[index - 1] > 50)
                    BearishValue[index - 1] = resMa[index - 1];

                BullishValue[index] = double.NaN;
            }
        }
    }
}

@YesOrNot sadly the source code still needs to be reviewed.

Here's the code:

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


namespace cAlgo
{
    [Indicator(AccessRights = AccessRights.None)]
    public class LarryWilliamsLargeTradingIndex : Indicator
    {
        [Parameter(DefaultValue = 8)]
        public int Period { get; set; }

        [Output("BullishValue", LineColor = "Green", IsHistogram = true, Thickness = 2)]
        public IndicatorDataSeries BullishValue { get; set; }

        [Output("BearishValue", LineColor = "D4FE0000", IsHistogram = true, Thickness = 2)]
        public IndicatorDataSeries BearishValue { get; set; }

        [Output("Middle", LineColor = "FF737373", Thickness=1, LineStyle = LineStyle.Dots)]
        public IndicatorDataSeries Middle { get; set; }

        private MovingAverage movingAverage;        
        private AverageTrueRange averageTrueRange;


        protected override void Initialize()
        {
            //System.Diagnostics.Debugger.Launch();

            IndicatorDataSeries ma = CreateDataSeries();

            for(int i = 0; i < Bars.ClosePrices.Count; i++)
            {
                if (i < Period)
                    ma[i] = Bars.ClosePrices[i];
                else
                    ma[i] = Bars.ClosePrices[i] - Bars.ClosePrices[i - Period];
            }

            movingAverage = Indicators.SimpleMovingAverage(ma, Period);
            averageTrueRange = Indicators.AverageTrueRange(Period, MovingAverageType.Exponential);
        }

        public override void Calculate(int index)
        {
            // Calculate value at specified index
            //var ma = (Bars.ClosePrices.LastValue - Bars.ClosePrices[index - Period]);

            var atr = averageTrueRange.Result[index];
            double result = movingAverage.Result[index] / atr  * 50;


            if (result < 0)
            {
                BearishValue[index] = result;
                BullishValue[index] = double.NaN;
            }
            else
            {
                BullishValue[index] = result;
                BearishValue[index] = double.NaN;
            }
            Middle[index] = 0;
        }

    }
}

Source code ?