The most popular forum topics:
- Machine learning in trading: theory, models, practice and algo-trading 51 new comments
- Genetic Optimization issue 11 new comments
- impossible to migrate on my VPS 8 new comments
2 new signals now available for subscription:
Published article "MQL5 Wizard techniques you should know (Part 06): Fourier Transform".
![MQL5 Wizard techniques you should know (Part 06): Fourier Transform](https://c.mql5.com/2/54/fourier_transform_avatar.png)
The Fourier transform introduced by Joseph Fourier is a means of deconstructing complex data wave points into simple constituent waves. This feature could be resourceful to traders and this article takes a look at that.
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![MetaTrader 5 on Linux](https://c.mql5.com/2/0/linux5.png)
In this article, we demonstrate an easy way to install MetaTrader 5 on popular Linux versions — Ubuntu and Debian. These systems are widely used on server hardware as well as on traders’ personal computers.
![How to purchase a trading robot from the MetaTrader Market and to install it?](https://c.mql5.com/2/0/MQL5_market__1.png)
How to purchase a trading robot from the MetaTrader Market and to install it?
A product from the MetaTrader Market can be purchased on the MQL5.com website or straight from the MetaTrader 4 and MetaTrader 5 trading platforms. Choose a desired product that suits your trading style, pay for it using your preferred payment method, and activate the product.
![How to Test a Trading Robot Before Buying](https://c.mql5.com/2/0/avatar_test_mql5_market.png)
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.
Most downloaded source codes this month
- Cryptos_V1 - MetaTrader 4 Expert for ETH Crypto EA for ETH/USD pair.
- Elder Impulse System Candlestick This indicator paints the candlestick chart color according to the Elder Impulse System
- Candle Time End and Spread The indicator displays the current spread and the time till closing the bar (candlestick) at the same time.
3 new signals now available for subscription:
Published article "Population optimization algorithms: ElectroMagnetism-like algorithm (ЕМ)".
![Population optimization algorithms: ElectroMagnetism-like algorithm (ЕМ)](https://c.mql5.com/2/52/Avatar_ElectroMagnetism-like_algorithm_jj.png)
The article describes the principles, methods and possibilities of using the Electromagnetic Algorithm in various optimization problems. The EM algorithm is an efficient optimization tool capable of working with large amounts of data and multidimensional functions.
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The most popular forum topics:
- Machine learning in trading: theory, models, practice and algo-trading 59 new comments
- MT5 - Cloud Agents stuck on Processing 19 new comments
- AI 2023. Meet ChatGPT. 17 new comments
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![How to purchase a trading robot from the MetaTrader Market and to install it?](https://c.mql5.com/2/0/MQL5_market__1.png)
How to purchase a trading robot from the MetaTrader Market and to install it?
A product from the MetaTrader Market can be purchased on the MQL5.com website or straight from the MetaTrader 4 and MetaTrader 5 trading platforms. Choose a desired product that suits your trading style, pay for it using your preferred payment method, and activate the product.
![Creating an EA that works automatically (Part 11): Automation (III)](https://c.mql5.com/2/50/aprendendo_construindo_011_avatar.png)
Creating an EA that works automatically (Part 11): Automation (III)
An automated system will not be successful without proper security. However, security will not be ensured without a good understanding of certain things. In this article, we will explore why achieving maximum security in automated systems is such a challenge.
![How to Test a Trading Robot Before Buying](https://c.mql5.com/2/0/avatar_test_mql5_market.png)
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.
Most downloaded source codes this week
- Ma Price Cross (Custom Time) Buys when price breaks above the MA and Sells when price breaks below the MA. User can choose the time range (server time) to trade in.
- Strongest Pair Indicator This will return the pair with the most growth in the user input start time and end time
- Candle Time End and Spread The indicator displays the current spread and the time till closing the bar (candlestick) at the same time.
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Published article "Creating an EA that works automatically (Part 12): Automation (IV)".
![Creating an EA that works automatically (Part 12): Automation (IV)](https://c.mql5.com/2/50/aprendendo_construindo_012_avatar.png)
If you think automated systems are simple, then you probably don't fully understand what it takes to create them. In this article, we will talk about the problem that kills a lot of Expert Advisors. The indiscriminate triggering of orders is a possible solution to this problem.
Published article "How to create a custom True Strength Index indicator using MQL5".
![How to create a custom True Strength Index indicator using MQL5](https://c.mql5.com/2/54/true_strength_index_avatar.png)
Here is a new article about how to create a custom indicator. This time we will work with the True Strength Index (TSI) and will create an Expert Advisor based on it.
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The most popular forum topics:
- Machine learning in trading: theory, models, practice and algo-trading 31 new comments
- AI 2023. Meet ChatGPT. 16 new comments
- I purchased an EA but it won't load and says "invalid license". 11 new comments
Published article "Category Theory in MQL5 (Part 7): Multi, Relative and Indexed Domains".
![Category Theory in MQL5 (Part 7): Multi, Relative and Indexed Domains](https://c.mql5.com/2/54/Category-Theory-p7-avatar.png)
Category Theory is a diverse and expanding branch of Mathematics which is only recently getting some coverage in the MQL5 community. These series of articles look to explore and examine some of its concepts & axioms with the overall goal of establishing an open library that provides insight while also hopefully furthering the use of this remarkable field in Traders' strategy development.
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Published article "How to connect MetaTrader 5 to PostgreSQL".
![How to connect MetaTrader 5 to PostgreSQL](https://c.mql5.com/2/53/avatar_How_to_connect_MetaTrader_5_to_PostgreSQL.png)
This article describes four methods for connecting MQL5 code to a Postgres database and provides a step-by-step tutorial for setting up a development environment for one of them, a REST API, using the Windows Subsystem For Linux (WSL). A demo app for the API is provided along with the corresponding MQL5 code to insert data and query the respective tables, as well as a demo Expert Advisor to consume this data.