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How to Write an Expert Advisor or an Indicator

MQL5 Source Code Library for MetaTrader 5 - 65

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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 Expert Advisor trades using levels. It can have a maximum of two positions of each type (Buy and Sell) in the market.

A weighted CCI.

A portfolio EA for the MOEX FORTS market.

An indicator of trend strength.

A smoothed RSI.

Divergences of the Repulse oscillator.

An indicator of possible price "rebounds".

The Overbought/Oversold Index

The Performance Index indicator.

A Moving Average with the smoothing type by Mark Jurik.

An indicator of important extremums.

A trading system based on the Donchian Channel indicator.

Integral of Linear Regression Slope (ILRS MA).

An indicator of the dominant direction of closing of bars.

Triangular Moving Average.

An indicator of StopLoss levels.

An indicator of current support/resistance levels.

RMO

The tend indicator: Rahul Mohindar Oscillator

Regularized EMA by Cris Satchwell.

Smoothed Positive Volume Index

Universal trailing of positions and pending orders.

An indicator of StopLoss levels.

Least Square Moving Average - a moving average calculated by the least squares method.

Instantaneous Trendline by J. Ehlers.

HMA

Alan Hull's Moving Average is a non-lagging moving average.

Polynomial interpolation.

Crossover of two iMAs (Moving Averages), one more iMA (Moving Average) is used as the filter. Lot: manual or risk percent of balance. Stop, Market or Limit orders. The EA also sets Stop Loss, Take Profit, Trailing Stop.

Pending Buy Stop and Sell Stop orders. The EA trades in the specified time period. Determines the highest and lowest prices in the specified range of bars. Position trailing.

The Volatility Band 2 indicator is similar to the standard Bollinger Bands, and is a modification of Volatility_Band with the following difference: instead of a separate 'Low band adjustment', this parameter affects both the lower and the upper bands of the indicator.

Volatility Bands

A split moving average of volumes

A split Moving Average

SMI

The Smart_Money_Index indicator

PVI

Positive Volume Index

An indicator of the prevailing trend.

PR

Period Range

Pearson product-moment correlation coefficient

An indicator of volumes relative to the positive/negative price increment

A moving average by Tim Tillson

An information indicator showing maximum and minimum volumes.

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