Upcoming Article on generating Non-Standard charts (such as Renko), using MT5’s “Custom Symbols” (similar to “Offline Charts” in MT4).

To add comments, please log in or register
Fernando Carreiro
4361
Fernando Carreiro  

I’m currently writing “open source” code for another user on the forum to generate Renko charts using MT5’s “Custom Symbols”, so I decided to document the procedure and to submit it as an Article to be published here as soon as I have completed writing it.

The article will describe how to generate these non-standard charts using “Custom Symbols”, which share some similarity to “Offline Charts” in MT4, but are much more intricate. I will be providing source code, in the form of an Indicator, to generate variations of Renko charts. I will also be explaining how to use these “Custom Symbols” charts during live trading, as well as how EAs can be used on them. These techniques can then be used by other developers for other non-standard charts, such as Range Bars, Volume Bars, 3-Line Break, etc.

Since this is a relatively new feature of MetaTrader v5, for which there is very little information available for “newbies” and even for the average coders, I would like to address in the Article any questions or doubts that users may have.

So, should anyone be interested, please leave your queries here on this thread and I will try to elaborate on some of them in more detail in the article being prepared.

Many thanks and best regards,
Fernando

EDIT: If I notice that there is very little interest in this subject, I will instead just publish the code in the CodeBase and not spend time on writing a full article.

Marco vd Heijden
Moderator
8160
Marco vd Heijden  

Yes there is doubt that a generated chart from historic data looks different then one slowly generated on live feed tick after tick.

This makes the generated charts look good while in reality there was a lot of chopping going on.

Fernando Carreiro
4361
Fernando Carreiro  
Marco vd Heijden: Yes there is doubt that a generated chart from historic data looks different then one slowly generated on live feed tick after tick. This makes the generated charts look good while in reality there was a lot of chopping going on.

Sorry, but I am not really sure I understand your post correctly! Can you elaborate and explain your statement please?

Are you saying that "Custom Symbol" data will not correctly reflect the OHLC bar data generated to it?

If so, let me clarify, that all "generated" OHLC data is exactly 100% matched when viewed on the M1 Chart of the "Custom Symbol" because that is the "seed" time-frame on which it bases all the higher time frames. Obviously, if you then look at the higher time-frames, which are just scaled-up from the M1 data, it will then not look accurate, because we are generating non-standard charts that are not time-based. Only the M1 chart is to be used as "valid" even if the average bar duration is of a much longer time. The other possible time-frames that "Custom Symbols" offers, are to be ignored as they are non-nonsensical due to the fact that the passage of time is variable in nature for most non-standard charts like Renko, Range Bars, 3-Line Break, etc.

Is this what you are getting at?

EDIT: Or are you perhaps referring to the difference of non-standard charts based on M1 data in comparison to those generated on Tick data?

If so, then that is obviously self-evident that they will always differ because of the granularity of the source data used and this holds true especially for MT4 "Offline Charts" as MT4 does not offer historical tick data access. In MT5 however, since Tick Data History is available, one can generate the chart solely on Tick data and not need to mix them as is done in MT4.

Ziheng Zhuang
16578
Ziheng Zhuang  

Great idea.

Hope to see your article ASAP.

I shared a library for showing back-testing equity by offline chart.

https://www.mql5.com/en/code/19439

If possible, please provide a library for MT5 back-testing with the same function I shared above.

Thank you.

CEquityHstBar
CEquityHstBar
  • votes: 2
  • 2017.11.20
  • Ziheng Zhuang
  • www.mql5.com
CEquityHstBar is the library for showing the equity of EA back-testing on an offline chart. The class is designed to write the equity data in back-testing into .hst file, and then show the equity on an offline chart. The .hst file is in the \tester folder, call CopyFile() to copy it to the history...
Fernando Carreiro
4361
Fernando Carreiro  
Ziheng Zhuang: Great idea. Hope to see your article ASAP. I shared a library for showing back-testing equity by offline chart. If possible, please provide a library for MT5 back-testing with the same function I shared above.

The Article will be based on the Renko chart generation to the "Custom Symbol". I will leave it up to you to use that knowledge (and the example code) to make such a library.

However, I don't see a great need for it, because the MT5 Strategy Tester already provides a good Equity Chart display that is based on time (as apposed to "trades" on MT4).


zemo
291
zemo  

Ola fernando...


seria muito bom termos isso para o MT5, pois um offline chart que possibilite o renko funcionar de verdade seria muito bom para a comunidade do mt5...

Fernando Carreiro
4361
Fernando Carreiro  
zemo: it would be very good to have this for MT5, since an offline chart that allows renko to work would be very good for the mt5 community ...

"seria muito bom termos isso para o MT5, pois um offline chart que possibilite o renko funcionar de verdade seria muito bom para a comunidade do mt5..."

Yes, that is the point of the code and the article - to provide the equivalent functionality that most MT4 users are already used to, allowing traders to use whichever indicators they wish on non-standard charts.

Alain Verleyen
36042
Alain Verleyen  
Fernando Carreiro:

...

EDIT: If I notice that there is very little interest in this subject, I will instead just publish the code in the CodeBase and not spend time on writing a full article.

Not sure you can draw such conclusions from a topic on the forum. I think if you publish an article there will be a lot of interest on this topic.

I suppose you already contacted an admin about your project ?

Fernando Carreiro
4361
Fernando Carreiro  
Alain Verleyen:

Not sure you can draw such conclusions from a topic on the forum. I think if you publish an article there will be a lot of interest on this topic.

I suppose you already contacted an admin about your project ?

No! Is there a need to do that? According to the instructions, there is only a recommendation to first publish a draft plan of the article, but it is not mandatory! Besides, even if it is not approved, I can always just publish it as a Blog post.

Marco vd Heijden
Moderator
8160
Marco vd Heijden  
Fernando Carreiro:

Sorry, but I am not really sure I understand your post correctly! Can you elaborate and explain your statement please?

Are you saying that "Custom Symbol" data will not correctly reflect the OHLC bar data generated to it?

If so, let me clarify, that all "generated" OHLC data is exactly 100% matched when viewed on the M1 Chart of the "Custom Symbol" because that is the "seed" time-frame on which it bases all the higher time frames. Obviously, if you then look at the higher time-frames, which are just scaled-up from the M1 data, it will then not look accurate, because we are generating non-standard charts that are not time-based. Only the M1 chart is to be used as "valid" even if the average bar duration is of a much longer time. The other possible time-frames that "Custom Symbols" offers, are to be ignored as they are non-nonsensical due to the fact that the passage of time is variable in nature for most non-standard charts like Renko, Range Bars, 3-Line Break, etc.

Is this what you are getting at?

EDIT: Or are you perhaps referring to the difference of non-standard charts based on M1 data in comparison to those generated on Tick data?

If so, then that is obviously self-evident that they will always differ because of the granularity of the source data used and this holds true especially for MT4 "Offline Charts" as MT4 does not offer historical tick data access. In MT5 however, since Tick Data History is available, one can generate the chart solely on Tick data and not need to mix them as is done in MT4.

I mean i have seen some Renko's that used for example bar open or close only and they draw a much different pattern then when high, and low are included.

Indeed tick will solve this issue which should become visible immediately when compared to old skool techniques. 

Fernando Carreiro
4361
Fernando Carreiro  
Marco vd Heijden:

I mean i have seen some Renko's that used for example bar open or close only and they draw a much different pattern then when high, and low are included.

Indeed tick will solve this issue which should become visible immediately when compared to old skool techniques. 

Well that is because there are quite a number of valid variants of Renko calculations - the original only prints “bricks” while others show wicks and others show true OHLC values and not synthetic open/close as the original does.

Also, since MT4 does not have Tick history, when the generation starts, it calculates the past based on M1, and then switches to tick based calculations for current data. If you refresh it, it recalculates again based on M1 and loses its Tick based accuracy.

On MT5, one can now do everything based on Tick History data. However, for this first Article, for the sake of simplicity, I will only be doing M1 generation for both past and current bars. I will consider Tick based generation for a later Article as it requires more sophistication which might be too complex for beginner/average coders.

EDIT: The main aim of the Article is the introduction of non-standard charts using “Custom Symbols” and not so much how to calculate accurate tick-based Renko for which I will leave for another time.

To add comments, please log in or register