Articles on strategy testing in MQL5

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How to develop, write and test a trading strategy, how to find the optimal system parameters and how to analyze the results? The MetaTrader platform offers developers of trading robots rich functionality for fast and accurate testing of trading ideas. Read these articles to learn how to test multi-currency robots and how to use MQL5 Cloud Network for optimization purposes.

Developers of automated trading systems are recommended to start with the testing fundamentals and tick generation algorithms in the strategy tester.

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How to Test a Trading Robot Before Buying
How to Test a Trading Robot Before Buying

How to Test a Trading Robot Before Buying

Buying a trading robot on MQL5 Market has a distinct benefit over all other similar options - an automated system offered can be thoroughly tested directly in the MetaTrader 5 terminal. Before buying, an Expert Advisor can and should be carefully run in all unfavorable modes in the built-in Strategy Tester to get a complete grasp of the system.
How to build and test a Binary Options strategy with the MetaTrader 4 Strategy Tester
How to build and test a Binary Options strategy with the MetaTrader 4 Strategy Tester

How to build and test a Binary Options strategy with the MetaTrader 4 Strategy Tester

Tutorial to build a Binary Options strategy an test it in Strategy-Tester of MetaTrader 4 with Binary-Options-Strategy-Tester utility from marketplace.
Testing trading strategies on real ticks
Testing trading strategies on real ticks

Testing trading strategies on real ticks

The article provides the results of testing a simple trading strategy in three modes: "1 minute OHLC", "Every tick" and "Every tick based on real ticks" using actual historical data.
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The Fundamentals of Testing in MetaTrader 5

The Fundamentals of Testing in MetaTrader 5

What are the differences between the three modes of testing in MetaTrader 5, and what should be particularly looked for? How does the testing of an EA, trading simultaneously on multiple instruments, take place? When and how are the indicator values calculated during testing, and how are the events handled? How to synchronize the bars from different instruments during testing in an "open prices only" mode? This article aims to provide answers to these and many other questions.
The checks a trading robot must pass before publication in the Market
The checks a trading robot must pass before publication in the Market

The checks a trading robot must pass before publication in the Market

Before any product is published in the Market, it must undergo compulsory preliminary checks in order to ensure a uniform quality standard. This article considers the most frequent errors made by developers in their technical indicators and trading robots. An also shows how to self-test a product before sending it to the Market.
Why Is MQL5 Market the Best Place for Selling Trading Strategies and Technical Indicators
Why Is MQL5 Market the Best Place for Selling Trading Strategies and Technical Indicators

Why Is MQL5 Market the Best Place for Selling Trading Strategies and Technical Indicators

MQL5.community Market provides Expert Advisors developers with the already formed market consisting of thousands of potential customers. This is the best place for selling trading robots and technical indicators!
Automated Optimization of an EA for MetaTrader 5
Automated Optimization of an EA for MetaTrader 5

Automated Optimization of an EA for MetaTrader 5

This article describes the implementation of a self-optimization mechanism under MetaTrader 5.
Creating and testing custom symbols in MetaTrader 5
Creating and testing custom symbols in MetaTrader 5

Creating and testing custom symbols in MetaTrader 5

Creating custom symbols pushes the boundaries in the development of trading systems and financial market analysis. Now traders are able to plot charts and test trading strategies on an unlimited number of financial instruments.
Visual strategy builder. Creating trading robots without programming
Visual strategy builder. Creating trading robots without programming

Visual strategy builder. Creating trading robots without programming

This article presents a visual strategy builder. It is shown how any user can create trading robots and utilities without programming. Created Expert Advisors are fully functional and can be tested in the strategy tester, optimized in the cloud or executed live on real time charts.
What the Numbers in the Expert Testing Report Mean
What the Numbers in the Expert Testing Report Mean

What the Numbers in the Expert Testing Report Mean

Article explains how to read testing reports and to interpret the obtained results properly.
Testing and Optimization of Expert Advisors
Testing and Optimization of Expert Advisors

Testing and Optimization of Expert Advisors

The article provides a detailed description of the process of testing and optimizing Expert Advisors in the MetaTrader 4 Strategy Tester. The importance of such information and the need for this publication cannot be underestimated. A lot of users who only get started with the MetaTrader 4 trading platform have a very vague idea of what and how needs to be done when working with Expert Advisors. The proposed article gives simple and clear answers to all of these questions and provides a slightly more professional approach to handling these issues using a specific example.
Using Neural Networks In MetaTrader
Using Neural Networks In MetaTrader

Using Neural Networks In MetaTrader

This article shows you how to easily use Neural Networks in your MQL4 code taking advantage of best freely available artificial neural network library (FANN) employing multiple neural networks in your code.
The Algorithm of Ticks' Generation within the Strategy Tester of the MetaTrader 5 Terminal
The Algorithm of Ticks' Generation within the Strategy Tester of the MetaTrader 5 Terminal

The Algorithm of Ticks' Generation within the Strategy Tester of the MetaTrader 5 Terminal

MetaTrader 5 allows us to simulate automatic trading, within an embedded strategy tester, by using Expert Advisors and the MQL5 language. This type of simulation is called testing of Expert Advisors, and can be implemented using multithreaded optimization, as well as simultaneously on a number of instruments. In order to provide a thorough testing, a generation of ticks based on the available minute history, needs to be performed. This article provides a detailed description of the algorithm, by which the ticks are generated for the historical testing in the MetaTrader 5 client terminal.
100 best optimization passes (part 1). Developing optimization analyzer
100 best optimization passes (part 1). Developing optimization analyzer

100 best optimization passes (part 1). Developing optimization analyzer

The article dwells on the development of an application for selecting the best optimization passes using several possible options. The application is able to sort out the optimization results by a variety of factors. Optimization passes are always written to a database, therefore you can always select new robot parameters without re-optimization. Besides, you are able to see all optimization passes on a single chart, calculate parametric VaR ratios and build the graph of the normal distribution of passes and trading results of a certain ratio set. Besides, the graphs of some calculated ratios are built dynamically beginning with the optimization start (or from a selected date to another selected date).
Comparative Analysis of 10 Trend Strategies
Comparative Analysis of 10 Trend Strategies

Comparative Analysis of 10 Trend Strategies

The article provides a brief overview of ten trend following strategies, as well as their testing results and comparative analysis. Based on the obtained results, we draw a general conclusion about the appropriateness, advantages and disadvantages of trend following trading.
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SQLite: Native handling of SQL databases in MQL5

SQLite: Native handling of SQL databases in MQL5

The development of trading strategies is associated with handling large amounts of data. Now, you are able to work with databases using SQL queries based on SQLite directly in MQL5. An important feature of this engine is that the entire database is placed in a single file located on a user's PC.
Automated Optimization of a Trading Robot in Real Trading
Automated Optimization of a Trading Robot in Real Trading

Automated Optimization of a Trading Robot in Real Trading

The articles describes and provides a library of functions that allows a trader to optimize his or her Expert Advisor's inputs by launching optimization directly from the EA.
Limitless Opportunities with MetaTrader 5 and MQL5
Limitless Opportunities with MetaTrader 5 and MQL5

Limitless Opportunities with MetaTrader 5 and MQL5

In this article, I would like to give an example of what a trader's program can be like as well as what results can be achieved in 9 months, having started to learn MQL5 from scratch. This example will also show how multi-functional and informative such a program can be for a trader while taking minimum space on the price chart. And we will be able to see just how colorful, bright and intuitively clear to the user trade information panels can get. As well as many other features...
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Fast Dive into MQL5

Fast Dive into MQL5

You have decided to study MQL5 trading strategies' programming language, but you know nothing about it? We have tried to examine MQL5 and MetaTrader 5 terminal from the newcomers' point of view and have written this short introductory article. In this article, you can find a brief idea of the possibilities of the language, as well as some tips on working with MetaEditor 5 and the terminal.
Merrill patterns
Merrill patterns

Merrill patterns

In this article, we will have a look at Merrill patterns' model and try to evaluate their current relevance. To do this, we will develop a tool to test the patterns and apply the model to various data types such as Close, High and Low prices, as well as oscillators.
Custom Strategy Tester based on fast mathematical calculations
Custom Strategy Tester based on fast mathematical calculations

Custom Strategy Tester based on fast mathematical calculations

The article describes the way to create a custom strategy tester and a custom analyzer of the optimization passes. After reading it, you will understand how the math calculations mode and the mechanism of so-called frames work, how to prepare and load custom data for calculations and use effective algorithms for their compression. This article will also be interesting to those interested in ways of storing custom information within an expert.
Speed Up Calculations with the MQL5 Cloud Network
Speed Up Calculations with the MQL5 Cloud Network

Speed Up Calculations with the MQL5 Cloud Network

How many cores do you have on your home computer? How many computers can you use to optimize a trading strategy? We show here how to use the MQL5 Cloud Network to accelerate calculations by receiving the computing power across the globe with the click of a mouse. The phrase "Time is money" becomes even more topical with each passing year, and we cannot afford to wait for important computations for tens of hours or even days.
Multi-symbol balance graph in MetaTrader 5
Multi-symbol balance graph in MetaTrader 5

Multi-symbol balance graph in MetaTrader 5

The article provides an example of an MQL application with its graphical interface featuring multi-symbol balance and deposit drawdown graphs based on the last test results.
Guide to Testing and Optimizing of Expert Advisors in MQL5
Guide to Testing and Optimizing of Expert Advisors in MQL5

Guide to Testing and Optimizing of Expert Advisors in MQL5

This article explains the step by step process of identifying and resolving code errors as well as the steps in testing and optimizing of the Expert Advisor input parameters. You will learn how to use Strategy Tester of MetaTrader 5 client terminal to find the best symbol and set of input parameters for your Expert Advisor.
Strategy Tester: Modes of Modeling during Testing
Strategy Tester: Modes of Modeling during Testing

Strategy Tester: Modes of Modeling during Testing

Many programs of technical analysis allow to test trading strategies on history data. In the most cases, the testing is conducted on already completed data without any attempts to model the trends within a price bar. It was made quickly, but not precisely
Evaluation of Trade Systems - the Effectiveness of Entering, Exiting and Trades in General
Evaluation of Trade Systems - the Effectiveness of Entering, Exiting and Trades in General

Evaluation of Trade Systems - the Effectiveness of Entering, Exiting and Trades in General

There are a lot of measures that allow determining the effectiveness and profitability of a trade system. However, traders are always ready to put any system to a new crash test. The article tells how the statistics based on measures of effectiveness can be used for the MetaTrader 5 platform. It includes the class for transformation of the interpretation of statistics by deals to the one that doesn't contradict the description given in the "Statistika dlya traderov" ("Statistics for Traders") book by S.V. Bulashev. It also includes an example of custom function for optimization.
The Flag Pattern
The Flag Pattern

The Flag Pattern

The article provides the analysis of the following patterns: Flag, Pennant, Wedge, Rectangle, Contracting Triangle, Expanding Triangle. In addition to analyzing their similarities and differences, we will create indicators for detecting these patterns on the chart, as well as a tester indicator for the fast evaluation of their effectiveness.
Visualize a Strategy in the MetaTrader 5 Tester
Visualize a Strategy in the MetaTrader 5 Tester

Visualize a Strategy in the MetaTrader 5 Tester

We all know the saying "Better to see once than hear a hundred times". You can read various books about Paris or Venice, but based on the mental images you wouldn't have the same feelings as on the evening walk in these fabulous cities. The advantage of visualization can easily be projected on any aspect of our lives, including work in the market, for example, the analysis of price on charts using indicators, and of course, the visualization of strategy testing. This article contains descriptions of all the visualization features of the MetaTrader 5 Strategy Tester.
Trading with Donchian Channels
Trading with Donchian Channels

Trading with Donchian Channels

In this article, we develop and tests several strategies based on the Donchian channel using various indicator filters. We also perform a comparative analysis of their operation.
Exploring Seasonal Patterns of Financial Time Series with Boxplot
Exploring Seasonal Patterns of Financial Time Series with Boxplot

Exploring Seasonal Patterns of Financial Time Series with Boxplot

In this article we will view seasonal characteristics of financial time series using Boxplot diagrams. Each separate boxplot (or box-and-whiskey diagram) provides a good visualization of how values are distributed along the dataset. Boxplots should not be confused with the candlestick charts, although they can be visually similar.
Debugging MQL5 Programs
Debugging MQL5 Programs

Debugging MQL5 Programs

This article is intended primarily for the programmers who have already learned the language but have not fully mastered the program development yet. It reveals some debugging techniques and presents a combined experience of the author and many other programmers.
How Long Is the Trend?
How Long Is the Trend?

How Long Is the Trend?

The article highlights several methods for trend identification aiming to determine the trend duration relative to the flat market. In theory, the trend to flat rate is considered to be 30% to 70%. This is what we'll be checking.
Developing stock indicators featuring volume control through the example of the delta indicator
Developing stock indicators featuring volume control through the example of the delta indicator

Developing stock indicators featuring volume control through the example of the delta indicator

The article deals with the algorithm of developing stock indicators based on real volumes using the CopyTicks() and CopyTicksRange() functions. Some subtle aspects of developing such indicators, as well as their operation in real time and in the strategy tester are also described.
MQL5 Cookbook: Trading strategy stress testing using custom symbols
MQL5 Cookbook: Trading strategy stress testing using custom symbols

MQL5 Cookbook: Trading strategy stress testing using custom symbols

The article considers an approach to stress testing of a trading strategy using custom symbols. A custom symbol class is created for this purpose. This class is used to receive tick data from third-party sources, as well as to change symbol properties. Based on the results of the work done, we will consider several options for changing trading conditions, under which a trading strategy is being tested.
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Continuous Walk-Forward Optimization (Part 1): Working with Optimization Reports

Continuous Walk-Forward Optimization (Part 1): Working with Optimization Reports

The first article is devoted to the creation of a toolkit for working with optimization reports, for importing them from the terminal, as well as for filtering and sorting the obtained data. MetaTrader 5 allows downloading optimization results, however our purpose is to add our own data to the optimization report.
Applying the Monte Carlo method for optimizing trading strategies
Applying the Monte Carlo method for optimizing trading strategies

Applying the Monte Carlo method for optimizing trading strategies

Before launching a robot on a trading account, we usually test and optimize it on quotes history. However, a reasonable question arises: how can past results help us in the future? The article describes applying the Monte Carlo method to construct custom criteria for trading strategy optimization. In addition, the EA stability criteria are considered.
How to quickly develop and debug a trading strategy in MetaTrader 5
How to quickly develop and debug a trading strategy in MetaTrader 5

How to quickly develop and debug a trading strategy in MetaTrader 5

Scalping automatic systems are rightfully regarded the pinnacle of algorithmic trading, but at the same time their code is the most difficult to write. In this article we will show how to build strategies based on analysis of incoming ticks using the built-in debugging tools and visual testing. Developing rules for entry and exit often require years of manual trading. But with the help of MetaTrader 5, you can quickly test any such strategy on real history.
Creating Multi-Expert Advisors on the basis of Trading Models
Creating Multi-Expert Advisors on the basis of Trading Models

Creating Multi-Expert Advisors on the basis of Trading Models

Using the object-oriented approach in MQL5 greatly simplifies the creation of multi-currency/multi-system /multi-time-frame Expert Advisors. Just imagine, your single EA trades on several dozens of trading strategies, on all of the available instruments, and on all of the possible time frames! In addition, the EA is easily tested in the tester, and for all of the strategies, included in its composition, it has one or several working systems of money management.
My First "Grail"
My First "Grail"

My First "Grail"

Examined are the most frequent mistakes that lead the first-time programmers to creation of a "super-moneymaking" (when tested) trading systems. Exemplary experts that show fantastic results in tester, but result in losses during real trading are presented.
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Continuous Walk-Forward Optimization (Part 4): Optimization Manager (Auto Optimizer)

Continuous Walk-Forward Optimization (Part 4): Optimization Manager (Auto Optimizer)

The main purpose of the article is to describe the mechanism of working with our application and its capabilities. Thus the article can be treated as an instruction on how to use the application. It covers all possible pitfalls and specifics of the application usage.