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How to Write an Expert Advisor or an Indicator

MQL4 Source Code Library for MetaTrader 4 - 67

The largest library features codes of free trading Expert Advisors, technical indicators and scripts. With the available applications you can trade in automated mode and analyze price dynamics. Use the library of codes to learn more about financial market sentiments.

Download free applications, test them and run in your MetaTrader 4. You can access them from the MetaTrader 4 platform and the MetaEditor development environment.

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Modified Heiken Ashi

Modified indicator AvgRangeM.

One more version of the indicator Range.

Indicator OnChart Rsi.

Indicator FX5_SelfAdjustingRSI.

Indicator BB-Squeeze. The modified version. For work the indicator bbsqueeze is necessary.

Indicator FFS CrossTiming. Shows a trend of all cros'ов, connected with the considered pair. Further see in a code of the indicator.

Indicator EMA Prediction.

Indicator BAT ATR v1

Indicator RSI-TC.

I'm waiting for your opinions.

Indicator Filter over WPR. It is based on indicator Stochastic.

One more version of an indicator to calculate support/resistance levels.

An indicator for viewing turning shapes.

A trend-following indicator. It's simple as a coign.

Indicator Trix is used in determining of the overbought/oversold market conditions. You can also use it as an impulse indicator.

Indicator MTF Alligator+T3.

Indicator MTF MACD_Bars.

Indicators MTF Heiken_Ashi and MTF Heiken_Ashi_[sw]. Work with indicator Heiken Ashi.

Indicator Aroon_Horn_Oscillator_v1.

Indicator ang_AZad_Css[cw].

Indicator Damiani_volatmeter.

Indicator MTF_4 TF XO_M30D1. Works with indicator XO.

Indicator MTF_HI_LOW_v1.

Indicator MTF_MAMy3. Works with indicator MAMy v.3

The modified version of indicator Accumulation/distribution.

By means of these indicators, you can not switch the periods of the schedule in MetaTrader. As all the periods will be at you before eyes.

Modified indicator Waddah Attar Explosion.

Right corner - direction of price movement; signals from 8(9) TFs (1M-1W) ; up to 8 MAs (def. 5,21,55)

Shows when to sell and when to buy, but not all so is simple.

The purpose of this EA is to find good entry in a well established trend. The EA was developed on 1 Hour EUR_USD graph, but I think that the similar concept can works in a good manner on the other crosses too. I’m happy about the drawdown.

Indicator AMA Slope.

Indicator Dolly_Trading Times _3. Shows working hours.

Indicator Dolly_Graphics_v11-GMTShift. Shows various recommendations, in particular on purchase and sale in percentage terms, the current price...

Indicator MTF_Stochastic_SmL. Uses signals Stochastic'а.

Indicator MTF_OsMA_Lc. Copied indicator OsMACD_M (it OsMA_Lc). Only now OsMA_Lc it is caused through iCustom.

Indicator MTF_WildersDMI_v1m. One more version of indicator WildersDMI_v1. Works with indicator ADX_WildersDMI_v1m.

Советник e-News-Lucky$.

Adviser Two PerBar. One more unpretentious variant.

5_8 MACross. Uses indicator MA.

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