wehub-resource-sync
93 lines
3.8 KiB
C#
93 lines
3.8 KiB
C#
/*
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* QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
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* Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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using System;
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using QuantConnect.Data.Market;
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namespace QuantConnect.Indicators
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{
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/// <summary>
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/// This indicator computes the Accumulation/Distribution Oscillator (ADOSC)
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/// The Accumulation/Distribution Oscillator is calculated using the following formula:
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/// ADOSC = EMA(fast,AD) - EMA(slow,AD)
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/// </summary>
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public class AccumulationDistributionOscillator : TradeBarIndicator, IIndicatorWarmUpPeriodProvider
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{
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private readonly int _period;
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private readonly AccumulationDistribution _ad;
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private readonly ExponentialMovingAverage _emaFast;
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private readonly ExponentialMovingAverage _emaSlow;
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/// <summary>
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/// Initializes a new instance of the <see cref="AccumulationDistributionOscillator"/> class using the specified parameters
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/// </summary>
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/// <param name="fastPeriod">The fast moving average period</param>
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/// <param name="slowPeriod">The slow moving average period</param>
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public AccumulationDistributionOscillator(int fastPeriod, int slowPeriod)
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: this($"ADOSC({fastPeriod},{slowPeriod})", fastPeriod, slowPeriod)
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{
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="AccumulationDistributionOscillator"/> class using the specified parameters
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/// </summary>
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/// <param name="name">The name of this indicator</param>
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/// <param name="fastPeriod">The fast moving average period</param>
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/// <param name="slowPeriod">The slow moving average period</param>
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public AccumulationDistributionOscillator(string name, int fastPeriod, int slowPeriod)
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: base(name)
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{
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_period = Math.Max(fastPeriod, slowPeriod);
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_ad = new AccumulationDistribution(name + "_AD");
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_emaFast = new ExponentialMovingAverage(name + "_Fast", fastPeriod);
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_emaSlow = new ExponentialMovingAverage(name + "_Slow", slowPeriod);
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}
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/// <summary>
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/// Gets a flag indicating when this indicator is ready and fully initialized
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/// </summary>
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public override bool IsReady => Samples >= _period;
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/// <summary>
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/// Required period, in data points, for the indicator to be ready and fully initialized.
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/// </summary>
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public int WarmUpPeriod => _period;
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/// <summary>
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/// Computes the next value of this indicator from the given state
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/// </summary>
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/// <param name="input">The input given to the indicator</param>
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/// <returns>A new value for this indicator</returns>
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protected override decimal ComputeNextValue(TradeBar input)
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{
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_ad.Update(input);
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_emaFast.Update(_ad.Current);
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_emaSlow.Update(_ad.Current);
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return IsReady ? _emaFast.Current.Value - _emaSlow.Current.Value : 0m;
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}
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/// <summary>
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/// Resets this indicator to its initial state
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/// </summary>
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public override void Reset()
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{
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_ad.Reset();
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_emaFast.Reset();
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_emaSlow.Reset();
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base.Reset();
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}
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}
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} |