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How to Write an Expert Advisor or an Indicator

MQL5 Source Code Library for MetaTrader 5 - 121

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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 MultiDeMarkerTrend_x10 indicator shows information on the current trends using the DeMarker oscillator position from then different timeframes

A variant of the DeMarkerTrend_x10 indicator with the option to individually customize the input parameters for each DeMarker oscillator which are used to display the current trends

The DeMarkerTrend_x10 indicator shows the DeMarker oscillator position from ten different timeframes

The Exp_LSMA_Angle Expert Advisor is based on the LSMA_Angle histogram breakthrough of the overbought and oversold levels

The LSMA_Angle indicator with the timeframe selection option available in input parameters

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

A variant of the StochasticTrend_x10 indicator with the option to individually customize the input parameters for each Stochastic oscillator which are used to display the current trends.

A variant of the MFITrend_x10 indicator with the option to individually customize the input parameters for each MFI oscillator which are used to display the current trends

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

A semaphore signal indicator based on crossovers of the main and the signal lines of the LinearRegSlope_V2 indicator

A semaphore signal indicator based on crossovers of the main and the signal lines of the LinearRegSlope_V1 indicator

The Exp_LinearRegSlope_V1 Expert Advisor enters the market when the LinearRegSlope_V1 indicator cloud changes its color.

The LinearRegSlope_V2 indicator with the timeframe selection option available in the input parameters

A variant of the RVITrend_x10 indicator with the option to individually customize the input parameters for each RSI oscillator which are used to display the current trends.

A variant of the RSITrend_x10 indicator with the option to individually customize the input parameters for each RSI oscillator which are used to display the current trends

A semaphore signal indicator based on crossovers of the main and the signal lines of the LaguerreFilter indicator.

Semaphore signal indicator based on the Laguerre_ADX indicator color change algorithm.

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

The Exp_Laguerre_ADX Expert Advisor is based on the Laguerre_ADX indicator color change.

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

The difference between the Laguerre_PlusDi and the Laguerre_MinusDi indicators in a single window in the form of a colored histogram

The Laguerre_PlusDi and Laguerre_MinusDi indicators in a single window in the form of a cloud

The Laguerre_PlusDi and Laguerre_MinusDi indicators in a single window in the form of a colored cloud with the timeframe selection option available in the input parameters.

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

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

The indicator plots a fan of Moving Averages and calculates Acceleration/Deceleration for each of them. This gives the ability to see the attenuation of a trend and the moment of its change.

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

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

The Exp_LaguerreFilter Expert Advisor with the entry at the intersection of the fast and the slow lines of the LaguerreFilter indcator.

LaguerreVolume indicator with the timeframe selection option available in the input parameters.

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

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

The XKRI indicator implemented as a sequence of candlesticks. Candlesticks appear as a result of relevant price timeseries processed by the XKRI algorithm.

The Exp_XKRI_Histogram Expert Advisor is based on the XKRI_Histogram oscillator change of direction.

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

The KRI indicator implemented as a sequence of candlesticks.

The smoothed KRI oscillator implemented in the form of a color histogram.

The SlopeDirectionLine_HTF_Signal indicator displays trend directions from three bars of the SlopeDirectionLine indicator as three graphical objects, colors of which determine a trend direction

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

The Exp_XDerivative Expert Advisor is based on the XDerivative oscillator change of direction.

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