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How to Write an Expert Advisor or an Indicator

MQL5 Source Code Library for MetaTrader 5 - 66

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 CCI indicator using a digital filtering.

Trading system using the iCCI_NR indicator.

The iCCI_NR indicator implemented as a sequence of candlesticks.

The iCCI_NR with the timeframe selection option available in the input parameters.

The noiseless CCI indicator.

Trading system using the ColorMETRO_Stochastic indicator.

The ColorMETRO_Stochastic with the timeframe selection option available in the input parameters.

Indicator of the oscillator type, which displays its values based on the Stochastic technical indicator.

Trading system using the ColorMETRO_DeMarker indicator.

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

The ColorMETRO with the timeframe selection option available in the input parameters.

Indicator of the oscillator type, which displays its values based on the DeMarker technical indicator.

The ATR_3XMA indicator with the timeframe selection option available in the input parameters.

The indicator for determining the time when the pending orders should be placed.

The Exp_Loco Expert Advisor based on signals of the Loco indicator.

The Loco with the timeframe selection option available in the input parameters.

The AtrRange with the timeframe selection option available in the input parameters.

The Squize_MA with the timeframe selection option available in the input parameters.

Simple trend indicator.

The Exp_MACD-2 Expert Advisor based on signal entry taken from the MACD-2 indicator.

The MACD-2 indicator with the timeframe selection option available in input parameters.

The indicator, that determines the moments of the lowest volatility.

The Exp_AnchoredMomentumCandle Expert Advisor based on signals of the AnchoredMomentumCandle indicator.

The ColorRMACD with the timeframe selection option available in the input parameters.

The BigBarSound indicator plays sound alerts when candlestick body size exceeds a certain value.

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

The Expert Advisor Exp_KalmanFilterCandle based on signals of the KalmanFilterCandle indicator.

The Expert Advisor Exp_MACDCandle based on signals of the MACDCandle indicator.

Trading system based on the signals of the Laguerre_ROC indicator.

The KalmanFilter indicator implemented as a sequence of candlesticks.

The MACD indicator implemented as a sequence of candlesticks.

The Exp_LeManTrend EA is based on the signals generated by the LeManTrend oscillator.

The LeManTrend with the timeframe selection option available in the input parameters.

The ColorJFatlAcceleration with the timeframe selection option available in the input parameters.

The JCCX with the timeframe selection option available in the input parameters.

The JJRSX with the timeframe selection option available in the input parameters.

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

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

Three smoothed Average True Range of different time frames in a single window.

Trading system based on the signals of the i-GAP indicator.

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