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How to Write an Expert Advisor or an Indicator

Top MQL4 and MQL5 source codes based on user ratings - 175

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A standard linear regression channel with support and resistance levels

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

Ehlers Distance Coefficient Filter coded exactly a Ehlers described it in his book "Rocket science for traders".

In this indicator T3 is sigmoidal (Softmax) normalized - made as oscillator that ranges in 0 to 1 range, and if you use hyperbolic normalization it will range from -1 to +1 range.

Average True Range Bands indicator

Breakout RSI indicator

Reflex and Trendflex was created by John Ehlers ("Stocks & Commodities Feb. 2020 (6-8)").

The currency strength meter is a trading tool that is used to identify trending and consolidating markets based on the percentage rate of change in price from one period to the next.

RSI Bot, send alert buy when RSI<=20, send alert sell when RSI>=80

The MA indicator with the ability of fine configuration

An Expert Advisor based on the "Fractals at Close prices" indicator.

Indicator Wiseman with the timeframe selection option in its input parameters.

Trend detection index

It's a triangular arbitrage system (three pairs correlation system) to use 3 currencies to make 3 pairs to open hedge orders on those. The expert starts opening six orders for each ring (3 plus and 3 minus) and wait to move prices in one direction to make a grid of orders. For more information, please read the MT4 version of the expert: https://www.mql5.com/en/market/product/33814

The StepMA_Stoch_KV1 indicator with the timeframe selection option available in input parameters.

The OzFx system. It uses Accelerator Oscillator and Stochastic Oscillator.

Geometric Mean Moving Average is a simple moving average calculated by the geometric mean method.

Indicator AbsolutelyNoLagLwma with the timeframe selection option available in input parameters, alerting when the indicator changes its color.

DMX

Indicator DMX (Bipolar DMI) is calculated using the standard indicator ADX. However, as compared to that, it displays data as an oscillator with a signal line, and has shorter delay.

Rj_SlidingRangeRj_Digit_System indicator provides alerts, sends email and push notifications when the candles break through the indicator channel.

Buying/Selling Pressure indicator

RSX of RSX

Volume/Volatility Indicator

"The Enhanced Signal To Noise Ratio" was created by John Ehlers and published in the book "Rocket Science for Traders", pg.87-88.

Commodity Channel Index using exponential moving averages.

This advisor demonstrates an example of global variables usage. The task of the advisor: store the calculation result in a global variable and get the global variable value on new initialization.

Linear Weighted Moving Average

A Sample of Averaging Up/Down Martingale EA.

MACD zero line cross color candles with alerts for Metatrader 5

Engulfing Pattern Plus One

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

Indicator Average Average True Range

The Wajdyss_Ichimoku_x10 indicator displaying the colors of the Wajdyss_Ichimoku_Candle indicator candlesticks from ten different timeframes, from the bar defined in the indicator input parameters.

Advisor for trading Gbp/Chf. Algorithm for bar opening prices. Timeframe H1.

ADR,AWR,AMR,Draws Average Range Lines

MoveStoploss moves the stoploss as the trade move in your direction at a specific distance. Version 1.1 has automatic trail error fixed.

The indicator of price movement relative to one selected time point

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

The indicator draws candlesticks of a larger timeframe as color filled rectangles in accordance with the colors of the CronexRSI indicator.

This is the "zone" indicator using Ehlers Nonlinear Filter for calculation.

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