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Access the CodeBase from your MetaTrader 5 terminal

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How to Write an Expert Advisor or an Indicator

MQL5 Source Code Library for MetaTrader 5 - 111

This is the largest free source code library for MetaTrader 5 platform programs. Here you can find ready-made Expert Advisors, technical indicators, scripts and libraries. Use the code library when learning MQL5 language and develop your own automated trading applications based on the provided codes.

You can freely download and test published codes, as well as launch them in MetaTrader 5. The library is also available directly from MetaTrader 5 platform and MetaEditor development environment.

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The MultiJFatlSignal indicator shows the information about active trends using the JFatl four indicators value from different Time Frame

This script displays several subcharts in a single chart window according to the number of currency pairs in Market Watch menu.

Envelopes drawn in ZigZag form. They can be drawn fixing Time Frame and then calculate input parameters

The Expert Advisor Exp_X2MA is drawn on the basis of X2MA universal Moving Average change.

The Three-Bar High/Low System indicator by Larry Williams

The oscillator with two lines based on Bollinger Bands, BearsPower and BullsPower

Simple scalper

The Expert Advisor analyses four Moving Averages: open, high, low, close. On its basis it calculates GO value and opens position according to its value

The Expert Advisor Exp_AdaptiveCyberCycle is built on the basis of the Adaptive Cyber Cycle indicator. The signal is formed when a bar is closing if there is crossing of indicator and its signal line.

The Expert Advisor based on signal entry taken from the AroonSignal signal indicator

The trading system based on the three Parabolics with three different Time Frames

The Expert Advisor based on the AMkA indicator

The Expert Advisor tries "to catch" rollbacks after a strong movement. Candlestick analyses is used

Good old Moving Average drawn using DRAW_SECTION style is a usual mean to draw ZigZag. Time Frame on which it is calculated can be set in input parameters. That is why such an unusual style of drawing is used.

The Expert Advisor on a single-layer line Perceptron with 4 entries which analyzes the Accelerator Oscillator indicator's data

Bollinger Bands drawn using DRAW_SECTION style is a usual mean to draw ZigZag. Time Frame on which it is calculated can be set in input parameters. That is why such an unusual style of drawing is used.

Selflearning Expert Advisor

Simple MA crossover Signaling for Expert Advisor Wizard

Analyzed copy of ATC2012 current champion JPAlonso's EA.

Export MQL5 live data to Excel (DDE)

The Shapiro-Wilk normality test.

The trading system based on the signals obtained from the BBands_Stop_v1 signal indicator.

This Expert Advisor uses support vector machine learning to analyze historical price data and signal future trades.

The trading system based on the signals obtained from the BBSqueeze signal indicator.

The trading system based on the change in the direction of a universal Bezier curve.

The Expert Advisor based on the following indicators: Laguerre, CCI and MA.

The Expert Advisor opens a position at the specified time in the direction opposite to that of yesterday's daily bar.

The Expert Advisor operating based on divergence of two moving averages.

An indicator similar to Bolinger Band.

Change Alert for barmenteros original indicator that compares four types of regression (linear, quadratic, logarithmic and exponential) and chooses the one that best fits the data analyzed.

The signal indicator based on the Aroon indicator values.

Parkinson's historical volatility.

This indicator calculates the classic historical volatility of a financial asset.

Implementation of the option to change the drawing mode, as exemplified by the CCI indicator.

This indicator draws a period of operation that specifies trade start time and trade stop time.

The Expert Advisor based on three moving averages and exit using Stop Loss or Take Profit. It sets up a market entry upon the conclusion of a trend on the trend reversal.

The Expert Advisor operating based on exponential and linear weighted moving averages of the same period.

The Expert Advisor operating based on the SAR and ADX indicators where the permitted trade direction is selected based on trade results.

The iClose_HTF indicator plots a zigzag based on closing prices of a time frame specified in the input parameters.

The simplest visual interpretation of a candlestick chart.

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