Files
quantconnect--lean/Report/ReportElements/MaxDrawdownReportElement.cs
Gerardo Salazar 40c3062348 Improves Report Generator stability and fixes various bugs (#4759)
* Improves stability and fixes various bugs

  * Adds unit tests covering changes
  * Adds COVID-19 crisis plots
  * Adjusts styling of crisis plots for more pleasant viewing
  * Fixes bug where null BacktestResult caused application to crash
  * Order JSON bug fixes and stability improvements
  * MaxDrawdownReportElement now produces results for Live
  * Replaced Estimated Capacity w/ Days Live
  * Added Live marker to sharpe ratio
  * Added support for MOO and MOC orders in PortfolioLooper

* Address review: adds new unit tests and cleans up code

  * Bug fix: use LastFillTime instead of Order.Time for MOO and MOC

* Address review: Fixes tests and cleans up code
2020-09-29 10:03:26 -03:00

69 lines
2.5 KiB
C#

/*
* QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
* Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
using System;
using System.Linq;
using Deedle;
using QuantConnect.Packets;
namespace QuantConnect.Report.ReportElements
{
internal sealed class MaxDrawdownReportElement : ReportElement
{
private LiveResult _live;
private BacktestResult _backtest;
/// <summary>
/// Estimate the max drawdown of the strategy.
/// </summary>
/// <param name="name">Name of the widget</param>
/// <param name="key">Location of injection</param>
/// <param name="backtest">Backtest result object</param>
/// <param name="live">Live result object</param>
public MaxDrawdownReportElement(string name, string key, BacktestResult backtest, LiveResult live)
{
_live = live;
_backtest = backtest;
Name = name;
Key = key;
}
/// <summary>
/// The generated output string to be injected
/// </summary>
public override string Render()
{
if (_live == null)
{
return _backtest?.TotalPerformance?.PortfolioStatistics?.Drawdown.ToString("P1") ?? "-";
}
var backtestEquityPoints = new Series<DateTime, double>(ResultsUtil.EquityPoints(_backtest));
var liveEquityPoints = new Series<DateTime, double>(ResultsUtil.EquityPoints(_live));
var backtestDrawdownGroups = new DrawdownCollection(backtestEquityPoints, 1);
var liveDrawdownGroups = new DrawdownCollection(liveEquityPoints, 1);
var separateResultsMaxDrawdown = backtestDrawdownGroups.Drawdowns
.Concat(liveDrawdownGroups.Drawdowns)
.Select(x => x.PeakToTrough)
.OrderByDescending(x => x)
.FirstOrDefault();
return $"{separateResultsMaxDrawdown:P1}";
}
}
}