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How to Write an Expert Advisor or an Indicator

MQL5 Source Code Library for MetaTrader 5 - 104

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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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Exp_TSICloud

Exp_TSICloud Expert Advisor is based on the change of color of TSICloud indicator.

PriceChannel_Stop_Digit

PriceChannel_Stop indicator displays the most recent value as a price label with the the possibility to round the channel levels up to a required number of digits.

T3Taotra_HTF

T3Taotra indicator with the timeframe selection option available in input parameters.

TSICloud

Oscillator in the form of a cloud based on correlation of two smoothed Momentums from different timeframes.

PriceChannel_Stop_HTF

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

Exp_ROC2_VG

Exp_Directed_Movement is based on the change of color of ROC2_VG indicator.

ROC2_VG_HTF

ROC2_VG indicator with the timeframe selection option available in the input parameters.

XEnvelopes_Digit_Grid

Envelopes indicator with the color filling inside the channel, drawn as a cloud, with the display of the last values as price labels and the possibility to round the channel levels up to a required number of digits, and a price grid with these rounded values.

XEnvelopes_Digit

Envelopes indicator with the color filling inside the channel, drawn as a cloud, with the display of the last values as price labels and the possibility to round the channel levels up to a required number of digits.

TrendX

TrendX indicator can be used for the market entry/exit.

ROC2_VG

Plotting ROC indicators of two arbitrary types (including Momentum) and periods in a single window.

M2_MA_HTF

M2_MA indicator with the timeframe selection option available in the input parameters.

M2_MACandle

M2_MA indicator implemented as a sequence of candlesticks.

MaChannel_HTF

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

Exp_MaChannel

Trading system based on MaChannel indicator signals.

Exp_Q2MA

Exp_Q2MA is based on the change of color of the Q2MA indicator.

Q2MA_HTF

Q2MA indicator with the timeframe selection option available in input parameters.

M2_MA

Smooth non-trivial linear combination of EMA and LWMA averagings.

MaChannel

A simple trend indicator based on two Moving Averages in NRTR form.

Q2MA

A simple trend indicator based on two Moving Averages in the form of a colored cloud.

AsymmetricStochNR_Sign

Semaphore signal indicator using asymmetric Stochastic oscillator in the form of a colored cloud.

AsymmetricStochNR_Cloud_HTF

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

AsymmetricStochNR_Cloud

Asymmetric Stochastic oscillator in the form of a colored cloud.

Exp_CCI_Woodies

Exp_Directed_Movement Expert Advisor is based on the change of color of the CCI_Woodies indicator.

CCI_Woodies_HTF

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

CCI_Woodies

Two CCI oscillators in a single window in the form of a colored cloud.

Exp_Directed_Movement

Exp_Directed_Movement Expert Advisor is based on the change of color of the Directed_Movement indicator.

InstTrend_HTF

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

Directed_Movement_HTF

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

Exp_VWAP_Close

Exp_VWAP_Close is based on VWAP_Close moving average change of direction.

InstTrend

The trend indicator drawn in the form of the colored cloud.

ZZ_Color

Simple and resource efficient ZigZag.

Directed_Movement

Double smoothed RSI indicator in the form of a colored cloud.

trend_arrows_HTF_Signal

trend_arrow_HTF_Signal shows a trend direction or a signal for performing a deal generated by trend_arrows indicator at the chosen bar as a graphic object with colored trend indication or deal direction and sends alerts or audio signals in case of a market entry moment.

trend_arrows_sign

Semaphore signal indicator based on the trend_arrows indicator algorithm.

Exp_trend_arrows

Trading system based on trend_arrows indicator signals.

trend_arrows_HTF

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

VWAP_Close_HTF

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

trend_arrows

Trend Arrows draws support/resistance lines as colored dots on a price chart.

VWAP_Close

VWAP_Close indicator defines liquidity points and average Close price weighted by volume.