MQL5 Programming Articles

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Study the MQL5 language for programming trading strategies in numerous published articles mostly written by you - the community members. The articles are grouped into categories to help you quicker find answers to any questions related to programming: Integration, Tester, Trading Strategies, etc.

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Timeseries in DoEasy library (part 58): Timeseries of indicator buffer data

Timeseries in DoEasy library (part 58): Timeseries of indicator buffer data

In conclusion of the topic of working with timeseries organise storage, search and sort of data stored in indicator buffers which will allow to further perform the analysis based on values of the indicators to be created on the library basis in programs. The general concept of all collection classes of the library allows to easily find necessary data in the corresponding collection. Respectively, the same will be possible in the class created today.
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Data Science and Machine Learning (Part 09): The K-Nearest Neighbors Algorithm (KNN)

Data Science and Machine Learning (Part 09): The K-Nearest Neighbors Algorithm (KNN)

This is a lazy algorithm that doesn't learn from the training dataset, it stores the dataset instead and acts immediately when it's given a new sample. As simple as it is, it is used in a variety of real-world applications.
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Neural networks made easy (Part 36): Relational Reinforcement Learning

Neural networks made easy (Part 36): Relational Reinforcement Learning

In the reinforcement learning models we discussed in previous article, we used various variants of convolutional networks that are able to identify various objects in the original data. The main advantage of convolutional networks is the ability to identify objects regardless of their location. At the same time, convolutional networks do not always perform well when there are various deformations of objects and noise. These are the issues which the relational model can solve.
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Matrix and Vector operations in MQL5

Matrix and Vector operations in MQL5

Matrices and vectors have been introduced in MQL5 for efficient operations with mathematical solutions. The new types offer built-in methods for creating concise and understandable code that is close to mathematical notation. Arrays provide extensive capabilities, but there are many cases in which matrices are much more efficient.
Universal regression model for market price prediction (Part 2): Natural, technological and social transient functions
Universal regression model for market price prediction (Part 2): Natural, technological and social transient functions

Universal regression model for market price prediction (Part 2): Natural, technological and social transient functions

This article is a logical continuation of the previous one. It highlights the facts that confirm the conclusions made in the first article. These facts were revealed within ten years after its publication. They are centered around three detected dynamic transient functions describing the patterns in market price changes.
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Creating an EA that works automatically (Part 03): New functions

Creating an EA that works automatically (Part 03): New functions

Today we'll see how to create an Expert Advisor that simply and safely works in automatic mode. In the previous article, we started to develop an order system that we will use in our automated EA. However, we have created only one of the necessary functions.
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Building and testing Aroon Trading Systems

Building and testing Aroon Trading Systems

In this article, we will learn how we can build an Aroon trading system after learning the basics of the indicators and the needed steps to build a trading system based on the Aroon indicator. After building this trading system, we will test it to see if it can be profitable or needs more optimization.
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Deep Learning Forecast and ordering with Python and MetaTrader5 python package and ONNX model file

Deep Learning Forecast and ordering with Python and MetaTrader5 python package and ONNX model file

The project involves using Python for deep learning-based forecasting in financial markets. We will explore the intricacies of testing the model's performance using key metrics such as Mean Absolute Error (MAE), Mean Squared Error (MSE), and R-squared (R2) and we will learn how to wrap everything into an executable. We will also make a ONNX model file with its EA.
Graphical interfaces X: New features for the Rendered table (build 9)
Graphical interfaces X: New features for the Rendered table (build 9)

Graphical interfaces X: New features for the Rendered table (build 9)

Until today, the CTable was the most advanced type of tables among all presented in the library. This table is assembled from edit boxes of the OBJ_EDIT type, and its further development becomes problematic. Therefore, in terms of maximum capabilities, it is better to develop rendered tables of the CCanvasTable type even at the current development stage of the library. Its current version is completely lifeless, but starting from this article, we will try to fix the situation.
MQL5 Cloud Network: Are You Still Calculating?
MQL5 Cloud Network: Are You Still Calculating?

MQL5 Cloud Network: Are You Still Calculating?

It will soon be a year and a half since the MQL5 Cloud Network has been launched. This leading edge event ushered in a new era of algorithmic trading - now with a couple of clicks, traders can have hundreds and thousands of computing cores at their disposal for the optimization of their trading strategies.
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Neural networks made easy (Part 27): Deep Q-Learning (DQN)

Neural networks made easy (Part 27): Deep Q-Learning (DQN)

We continue to study reinforcement learning. In this article, we will get acquainted with the Deep Q-Learning method. The use of this method has enabled the DeepMind team to create a model that can outperform a human when playing Atari computer games. I think it will be useful to evaluate the possibilities of the technology for solving trading problems.
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Building A Candlestick Trend Constraint Model(Part 2): Merging Native Indicators

Building A Candlestick Trend Constraint Model(Part 2): Merging Native Indicators

This article focuses on taking advantage of in-built meta trader 5 indicators to screen out off-trend signals. Advancing from the previous article we will explore how to do it using MQL5 code to communicate our idea to the final program.
Other classes in DoEasy library (Part 67): Chart object class
Other classes in DoEasy library (Part 67): Chart object class

Other classes in DoEasy library (Part 67): Chart object class

In this article, I will create the chart object class (of a single trading instrument chart) and improve the collection class of MQL5 signal objects so that each signal object stored in the collection updates all its parameters when updating the list.
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Timeseries in DoEasy library (part 55): Indicator collection class

Timeseries in DoEasy library (part 55): Indicator collection class

The article continues developing indicator object classes and their collections. For each indicator object create its description and correct collection class for error-free storage and getting indicator objects from the collection list.
Tips for Purchasing a Product on the Market. Step-By-Step Guide
Tips for Purchasing a Product on the Market. Step-By-Step Guide

Tips for Purchasing a Product on the Market. Step-By-Step Guide

This step-by-step guide provides tips and tricks for better understanding and searching for a required product. The article makes an attempt to puzzle out different methods of searching for an appropriate product, sorting out unwanted products, determining product efficiency and essentiality for you.
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Neural networks made easy (Part 26): Reinforcement Learning

Neural networks made easy (Part 26): Reinforcement Learning

We continue to study machine learning methods. With this article, we begin another big topic, Reinforcement Learning. This approach allows the models to set up certain strategies for solving the problems. We can expect that this property of reinforcement learning will open up new horizons for building trading strategies.
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How to deal with lines using MQL5

How to deal with lines using MQL5

In this article, you will find your way to deal with the most important lines like trendlines, support, and resistance by MQL5.
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Testing different Moving Average types to see how insightful they are

Testing different Moving Average types to see how insightful they are

We all know the importance of the Moving Average indicator for a lot of traders. There are other Moving average types that can be useful in trading, we will identify these types in this article and make a simple comparison between each one of them and the most popular simple Moving average type to see which one can show the best results.
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Complex indicators made easy using objects

Complex indicators made easy using objects

This article provides a method to create complex indicators while also avoiding the problems that arise when dealing with multiple plots, buffers and/or combining data from multiple sources.
The Role of Statistical Distributions in Trader's Work
The Role of Statistical Distributions in Trader's Work

The Role of Statistical Distributions in Trader's Work

This article is a logical continuation of my article Statistical Probability Distributions in MQL5 which set forth the classes for working with some theoretical statistical distributions. Now that we have a theoretical base, I suggest that we should directly proceed to real data sets and try to make some informational use of this base.
The Most Active MQL5.community Members Have Been Awarded iPhones!
The Most Active MQL5.community Members Have Been Awarded iPhones!

The Most Active MQL5.community Members Have Been Awarded iPhones!

After we decided to reward the most outstanding MQL5.com participants, we have selected the key criteria to determine each participant's contribution to the Community development. As a result, we have the following champions who published the greatest amount of articles on the website - investeo (11 articles) and victorg (10 articles), and who submitted their programs to Code Base – GODZILLA (340 programs), Integer (61 programs) and abolk (21 programs).
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Experiments with neural networks (Part 6): Perceptron as a self-sufficient tool for price forecast

Experiments with neural networks (Part 6): Perceptron as a self-sufficient tool for price forecast

The article provides an example of using a perceptron as a self-sufficient price prediction tool by showcasing general concepts and the simplest ready-made Expert Advisor followed by the results of its optimization.
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Neural networks made easy (Part 30): Genetic algorithms

Neural networks made easy (Part 30): Genetic algorithms

Today I want to introduce you to a slightly different learning method. We can say that it is borrowed from Darwin's theory of evolution. It is probably less controllable than the previously discussed methods but it allows training non-differentiable models.
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DoEasy. Controls (Part 2): Working on the CPanel class

DoEasy. Controls (Part 2): Working on the CPanel class

In the current article, I will get rid of some errors related to handling graphical elements and continue the development of the CPanel control. In particular, I will implement the methods for setting the parameters of the font used by default for all panel text objects.
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Category Theory in MQL5 (Part 16): Functors with Multi-Layer Perceptrons

Category Theory in MQL5 (Part 16): Functors with Multi-Layer Perceptrons

This article, the 16th in our series, continues with a look at Functors and how they can be implemented using artificial neural networks. We depart from our approach so far in the series, that has involved forecasting volatility and try to implement a custom signal class for setting position entry and exit signals.
DIY technical indicator
DIY technical indicator

DIY technical indicator

In this article, I will consider the algorithms allowing you to create your own technical indicator. You will learn how to obtain pretty complex and interesting results with very simple initial assumptions.
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Building and testing Keltner Channel trading systems

Building and testing Keltner Channel trading systems

In this article, we will try to provide trading systems using a very important concept in the financial market which is volatility. We will provide a trading system based on the Keltner Channel indicator after understanding it and how we can code it and how we can create a trading system based on a simple trading strategy and then test it on different assets.
Graphics in DoEasy library (Part 87): Graphical object collection - managing object property modification on all open charts
Graphics in DoEasy library (Part 87): Graphical object collection - managing object property modification on all open charts

Graphics in DoEasy library (Part 87): Graphical object collection - managing object property modification on all open charts

In this article, I will continue my work on tracking standard graphical object events and create the functionality allowing users to control changes in the properties of graphical objects placed on any charts opened in the terminal.
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Creating an EA that works automatically (Part 15): Automation (VII)

Creating an EA that works automatically (Part 15): Automation (VII)

To complete this series of articles on automation, we will continue discussing the topic of the previous article. We will see how everything will fit together, making the EA run like clockwork.
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Gain An Edge Over Any Market

Gain An Edge Over Any Market

Learn how you can get ahead of any market you wish to trade, regardless of your current level of skill.
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Creating an EA that works automatically (Part 04): Manual triggers (I)

Creating an EA that works automatically (Part 04): Manual triggers (I)

Today we'll see how to create an Expert Advisor that simply and safely works in automatic mode.
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Population optimization algorithms: Ant Colony Optimization (ACO)

Population optimization algorithms: Ant Colony Optimization (ACO)

This time I will analyze the Ant Colony optimization algorithm. The algorithm is very interesting and complex. In the article, I make an attempt to create a new type of ACO.
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Timeseries in DoEasy library (part 56): Custom indicator object, get data from indicator objects in the collection

Timeseries in DoEasy library (part 56): Custom indicator object, get data from indicator objects in the collection

The article considers creation of the custom indicator object for the use in EAs. Let’s slightly improve library classes and add methods to get data from indicator objects in EAs.
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Timeseries in DoEasy library (part 49): Multi-period multi-symbol multi-buffer standard indicators

Timeseries in DoEasy library (part 49): Multi-period multi-symbol multi-buffer standard indicators

In the current article, I will improve the library classes to implement the ability to develop multi-symbol multi-period standard indicators requiring several indicator buffers to display their data.
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Data Science and Machine Learning (Part 10): Ridge Regression

Data Science and Machine Learning (Part 10): Ridge Regression

Ridge regression is a simple technique to reduce model complexity and prevent over-fitting which may result from simple linear regression
How to create and test custom MOEX symbols in MetaTrader 5
How to create and test custom MOEX symbols in MetaTrader 5

How to create and test custom MOEX symbols in MetaTrader 5

The article describes the creation of a custom exchange symbol using the MQL5 language. In particular, it considers the use of exchange quotes from the popular Finam website. Another option considered in this article is the possibility to work with an arbitrary format of text files used in the creation of the custom symbol. This allows working with any financial symbols and data sources. After creating a custom symbol, we can use all the capabilities of the MetaTrader 5 Strategy Tester to test trading algorithms for exchange instruments.
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Learn how to design a trading system by Chaikin Oscillator

Learn how to design a trading system by Chaikin Oscillator

Welcome to our new article from our series about learning how to design a trading system by the most popular technical indicator. Through this new article, we will learn how to design a trading system by the Chaikin Oscillator indicator.
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Rebuy algorithm: Multicurrency trading simulation

Rebuy algorithm: Multicurrency trading simulation

In this article, we will create a mathematical model for simulating multicurrency pricing and complete the study of the diversification principle as part of the search for mechanisms to increase the trading efficiency, which I started in the previous article with theoretical calculations.
Graphics in DoEasy library (Part 79): "Animation frame" object class and its descendant objects
Graphics in DoEasy library (Part 79): "Animation frame" object class and its descendant objects

Graphics in DoEasy library (Part 79): "Animation frame" object class and its descendant objects

In this article, I will develop the class of a single animation frame and its descendants. The class is to allow drawing shapes while maintaining and then restoring the background under them.
Creating a "Snake" Game in MQL5
Creating a "Snake" Game in MQL5

Creating a "Snake" Game in MQL5

This article describes an example of "Snake" game programming. In MQL5, the game programming became possible primarily due to event handling features. The object-oriented programming greatly simplifies this process. In this article, you will learn the event processing features, the examples of use of the Standard MQL5 Library classes and details of periodic function calls.