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How to Write an Expert Advisor or an Indicator

Top MQL4 and MQL5 source codes based on user ratings - 76

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Join me to develop this project. It has been my project for 2 years now and running.

This indicator shows High and Low points for certain timeframe.

The Expert Advisor based on the Heiken Ashi indicator.

The function returns the lot size, which is calculated based on the stop loss size and the risk specified in the variable.

This is an indicator which totally based on RSI. The reason to amend this indicator is knowing the strength of a currency.

The indicator for the floating spread. Displays the change in spread of multiple currency pairs.

Example of Heiken Ashi Using Multi Time Frame (MTF).

Global Variables , Press function key "F3" Change "GMT_Time_Diff" : Diff. Eastern Time with Local Time "_ParaSL_SL" : Stop Loss Pips "_ParaSL_TP" : Take Profit Pips "_Para_Diff" : Retrace Entry , Pips with Parabolic Sar Value Remark : Limit Sell ; Bid Price with Parabolic Sars Value Limit Buy ; Ask Price with Parabolic Sars Value "_Para_lots" : Lots

Use the intersection of two moving average lines to draw a vertical line

EMA_CROSS Expert Advisor.

The indicator alerts at order closing, and reports about its profit.

The classic Moving Average indicator with a color change depending on the direction.

Indicator Bears and Bulls Power for MT4 together in one separate window.

Colored volumes at the bottom of the chart

Show Orders History On Chart

The EA was created similarly to EA that won the first place in the championship.

Indicator WcciPatterns. See the description at the indicator's code itself.

A universal template for MTS developing.

MACD and averages. A co-developing.

Indicator for draw line observed by the timing of certain (hour & minute of choice)

The astrological indicator. Marks of the zodiac. The current mark.

Using only ADX, this ea can make money, work better on M30

Trades using parabolic sar signals

Bounce Strength Indicator (BSI) shows the strength of bounce. It now works in trend and uses Tango Line calculations.

The indicator is shown in a histogram the Bull and Bears uptrend and downtrend uses a different way. You can set period of indicator and levels for trend.

A solution for those who can not devote much time to the analysis of the current situation on the Forex market and to making correct and confident decisions, that are an integral part of online trading.

The indicator draws the slow and fast ССI and colors bars for determining patterns and trends.

Classic signals for opening positions on the intersections of two moving averages.

Expert Advisor Divergence Trader.

CoeffofLine Indicator.

EA achieved best results on Renko Chart. Renko Chart is not mine but I used it to write EA on it. EA can trade every pair but I got best results on GBP/USD and EUR/JPY. I'll appreciate any comments.

This scrip will close all your open positions in your MT4. You just need to drag it to the chart.

This script shows you current currency pair spread, pip value and the total cost of the spread to open a position. Result will show in your account currency.

The Hull Moving Average (HMA) is an extremely fast and smooth Moving Average that almost eliminates lag altogether and manages to improve smoothing at the same time.

Click "Close All" button to close all your open & pending orders at once.

MACD in MA is an indicator to change color in iMA if iMACD is upper of zero (uptrend) or lower of zero (downtrend). It helps any trader to see the trend of pair. For more information about the indicator you can to visit the product's page: https://www.mql5.com/en/market/product/25084

Virtual Robot

EA with candle size filter and scale on loss

NewsReleaseEA is an expert to trade about economic news uses pending orders. For more information, please visit product's page: https://www.mql5.com/en/market/product/31590 Read how can to set GMT offset in my blog: https://www.mql5.com/en/blogs/post/732403

(Slow Adaptive Trend Line) – the «slow» adaptive trend line is calculated using a digital low-pass filter LPF-2. LPF-2 serves to eliminate the noises and market cycles with longer fluctuation periods.

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