The renko_bars_3in1 indicator is designed for building 3 types of Offline Renko charts.

It is important. To build an offline chart, you need a chart with a period of M1. When the indicator is installed on the chart, the offline chart opens automatically. When closing the terminal, also close the offline chart, as the next time you start the terminal, another offline chart will open. If such a situation occurs, close the offline charts and restart the indicator.

For testing, use the Demo version of the product. https://www.mql5.com/ru/market/product/27543

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The chart built using renko_bars_3in1 does not redraw the Open value on the current bar, and the Close value on the previous one, which is important for the full operation of indicators and Expert Advisors. The indicator also has the ability to test indicators and Expert Advisors in the tester.

In the comments , in post #8, there is an audio signal indicator for Renko charts.

For your experts to work on an offline chart, you need to create a copy of your expert Advisor, insert or replace the OnInit() function with the one below. Or use the refreshchart_and_tiks script I published(https://www.mql5.com/ru/code/19673) for the work of experts on offline charts (preferably, it does not require replacing functions in the Expert Advisor).

• candlesize – The size of the candle body, in pips.
• revsize – The value by which the reversal bar will increase.
• timeframe-Display on an offline chart (M2, M3, M4, M6, M7, M8, M9 or M10).
• priceforchart – The price used for plotting the chart. Close or (Ask Bid) /2.
• showwicks-Show shadows (true/false).
• strangesymbolname-Set true if the names of your broker pair differ from the standard pair name.
• Test-false; True if you open the chart for testing.
• datestart – The start date of the chart calculation.

How to install the indicator, and test your indicators, see the video.

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