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How to Write an Expert Advisor or an Indicator

MQL5 Source Code Library for MetaTrader 5 - 90

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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 EA places pending stop orders BUY_STOP and SELL_STOP.

The Expert Advisor places two pending orders (BuyStop and SellStop) with the specified expiration.

The Expert Advisor uses the values of two iMA (Moving Average, MA) indicators.

Uses two iStochastic (Stochastic Oscillator) indicators and one iRSI (RSI, Relative Strength Index). Calculates the lot size based on the analysis of closed trades.

The Expert Advisor searches for the momentum: iClose(t2)-iClose(t1).

The Expert Advisor opens or closes positions at the intersection of lines.

The Expert Advisor uses Parabolic SAR and three EMAs (with the periods of 10, 25 and 50).

Four trading strategies in one Expert Advisor.

The Expert Advisor plays sound alerts when candlestick size exceeds a certain value.

Displays important symbol and account parameters.

An example for calculating the lot value in accordance with the risk per trade.

The Expert Advisor trades moving average breakouts. It uses the following indicators: two iMAs (Moving Average, MA), iRSI(Relative Strength Index, RSI) and two iEnvelopes (Envelopes).

Trades using indicators: iStochastic (Stochastic Oscillator) and iRSI (Relative Strength Index, RSI).

The creation of the Expert Advisor stems from the topic "Neural networks - where to start studying them".

The Expert Advisor uses the iBullsPower (Bulls Power) indicator.

Demonstration of 3D visualization.

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

Aroon oscillator, next version.

DMA (general version).

Schaff trend cycle - adjustable smoothing.

Quantile bands - new version.

Double stochastic - RSI floating levels.

Dsl (discontinued signal line) - stochastic for MetaTrader 5.

Dsl (discontinued signal lines) - RSX.

Dsl (discontinued signal lines) - MACD (MetaTrader 5)

Dsl (discontinued signal lines) - RSI.

NonLag smoothed inverse fisher transform of RSX (MetaTrader 5 version).

When run on the price chart, the script modifies stop loss or take profit of all open orders for the current instrument.

The Expert Advisor uses the iDeMarker (DeMarker, DeM) and iStochastic (Stochastic Oscillator) indicators. Three virtual levels to protect profit.

The Expert Advisor trades the High and Low breakouts of the previous day.

To generate signals, it uses the combined patterns of three indicators: DCOS (by DC2008), BullsPower and BearsPower.

Pipsing Expert Advisor. It works based on the iChaikin (Chaikin Oscillator) and iMA (Moving Average, MA) indicators.

The Expert Advisor searches for movements without rollbacks (analysis of ticks).

Alligator - Expert Advisor for MetaTrader 5. Trading based on indicators: iAlligator (Alligator), iFractals (Fractals). Martingale.

Straddle&Trail - Expert Advisor for MetaTrader 5.

MTC Neural network plus MACD - Expert Advisor for MetaTrader 5.

MacdPatternTraderAll - Expert Advisor for MetaTrader 5. Six (iMACD, MACD, Moving Average Convergence/Divergence) indicators and four (iMA, MA, Moving Average) indicators. Opens trades when the indicator's MACD crosses its signal line.

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

Expert Advisor inspired by Ilan 1.6. It uses the iCCI(CCI, Commodity Channel Index), iRSI(RSI, Relative Strength Index) indicators.

The simplest EA based on the fractal MFI.

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