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How to Write an Expert Advisor or an Indicator

MQL5 Source Code Library for MetaTrader 5 - 45

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 Exp_ADXDMI trading system based on the signals of the ADXDMI oscillator.

The ADXDMI indicator with the timeframe selection option available in input parameters.

Semaphore arrow signal indicator based on the AroonOscillator oscillator leaving the overbought and oversold areas, which features alerts, sending emails and push-notifications to mobile devices.

Vertical histogram with distribution of Highs.

Vertical histogram with distribution of Lows.

Vertical histogram with distribution of extreme prices.

Vertical histogram with distribution of prices.

The indicator implements a breakout system using the PChannel_System channel, with the possibility to round the channel levels to the required number of orders and with the display of the latest channel breakout levels in the form of price labels.

The PChannel_System indicator with the timeframe selection option available in input parameters.

Indicator of intraday volatility with no lag.

The Donchian_Channels_System indicator with the timeframe selection option available in input parameters.

The indicator implements a breakout system using the DarvasBoxes channel, with the possibility to round the channel levels to the required number of orders and with the display of the latest channel breakout levels in the form of price labels.

The DarvasBoxes_System indicator with the timeframe selection option available in input parameters.

The ytg_Price_Peak indicator with the timeframe selection option available in input parameters.

Trading system based on DarvasBoxes_System indicator signals.

Trading system based on PChannel_System indicator signals.

The Fisher_org_v1 indicator with the timeframe selection option available in input parameters.

Trading system based on Donchian_Channels_System indicator signals.

Trading system based on Volume_Weighted_MACandle indicator signals.

An example of creating a trade panel using the MasterWindows library.

Trading system based on Volume_Weighted_MA_Digit_System indicator signals.

Trading system based on JFatl_Digit_System indicator signals.

Trading system based on Fisher_org_v1_Sign indicator signals.

Semaphore arrow signal indicator based on the Fisher_org_v1 oscillator leaving the overbought and oversold areas, which features alerts, sending emails and push-notifications to mobile devices.

The indicator implements a breakout system using a channel based on the High and Low price series processed by the algorithm of Volume_Weighted_MA_Digit.

The indicator implements a breakout system using a channel based on the High and Low price series processed by the algorithm of JFatl_Digit.

The Volume_Weighted_MA indicator implemented as a sequence of candlesticks.

Semaphore arrow signal indicator based on the Fisher_org_v1 oscillator leaving the overbought and oversold areas.

The Exp_Fisher_org_v1 EA is based on the signals generated by the Fisher_org_v1 oscillator.

Extracting trend and filtering noises using the method of singular spectrum analysis. Adjusting the indicator parameters allows to control the smoothness of the extracted trend and noise filtering threshold.

The Volume_Weighted_MA indicator that fills the chart space with a colored background and displays the most recent value as a price label with the possibility to round the channel levels up to a required number of digits.

The Volume_Weighted_MA_StDev indicator with the timeframe selection option available in input parameters.

The Fisher Transform indicator. It displays the current movements, and the set levels often act as turning points.

Oscillator can be used on multiple symbols and multiple timeframes.

Made some changes compared to the originally Momentum Pinball

The classic Aroon Oscillator in the new visual form.

Adaptive Laguerre filter with the usual set of 20 types of prices.

Blau T3 ergodic candlestick oscillator with new display types and styles

ALMA with floating levels and additional filters.

Another version of the RSI using smoothed prices.

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