Discussion of article "Custom symbols: Practical basics" - page 3

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Hi.

Thanks for this article. I try to figure out how can I create a new EURUSD M23 chart . I can create a custom EURUSD.custom but what I ha ve to do ot change the timeframe please?

 
michel picard:

Hi.

Thanks for this article. I try to figure out how can I create a new EURUSD M23 chart . I can create a custom EURUSD.custom but what I ha ve to do ot change the timeframe please?

If you mean you want to form bars/candles every 23 minutes, then you should do it in your code as you think is appropriate. This article does not provide a ready-made mechanism for such a tool. You can use some parts of the code which are suitable for your requirements and extend it.

 
EqualVolumeBars hasn't been updated since the article was published? There is always some kind of error during recording.
 
Rorschach:
EqualVolumeBars hasn't been updated since the article was published? Some kind of error keeps popping up when writing.

It would be good to give details about startup conditions and errors.

 
Stanislav Korotky:

It would be good to give details of startup conditions and errors.

Log:

HistoryCache 'EqAUDNZD' invalid container header [0]

HistoryBase 'EqAUDNZD' invalid container (1970.01.01) found (off: 18881, size: 28209, file: 4295014386)

Experts:

CustomRatesUpdate failed: 0


ps More than half a year of tick history never read once.

ps2 I changed WriteToFile to write to array, these errors appear

Log:

Ticks future price EqAUDNZD (tick: 2021.11.25 06:00:00:00, last: 1970.01.01 00:00:00.000) 1.09038/1.09059/0.00000

Experts:

Tick rewind bug, 2021.03.30 17:15:19

 
Rorschach:

Journal:

HistoryCache 'EqAUDNZD' invalid container header [0]

HistoryBase 'EqAUDNZD' invalid container (1970.01.01) found (off: 18881, size: 28209, file: 4295014386)

Experts:

CustomRatesUpdate failed: 0


ps Over half a year of tick history never read once.

ps2 I changed WriteToFile to write to an array, but these errors appear

Log:

Ticks future price EqAUDNZD (tick: 2021.11.25 06:00:00:00, last: 1970.01.01 00:00:00.000) 1.09038/1.09059/0.00000

Experts:

Tick rewind bug, 2021.03.30 17:15:19

Try it on different builds of the terminal. It all sounds like low-level custom character API bugs (in particular, messages from history and ticks are generated by the terminal itself). As for the "Tick rewind bug" message from the Expert Advisor - I wrote about a similar bug (it apparently has not been fixed):

Forum on trading, automated trading systems and testing trading strategies

Custom symbols. Errors, bugs, questions, suggestions.

Stanislav Korotky, 2020.07.01 16:08

New mystery. Problem with CopyTicks on build 2507, on older builds (in particular 2374) worked fine.

Reduced everything to a simple test script in the application. It asks for new ticks since the previous poll.

Soon after the first correct loop pass, the script starts copying to the array the ticks with the time obviously earlier than specified in the from parameter, to be more precise - from the beginning of the current day.

What is the bug?

Since there is a source code, you can study the problem and try to come up with a "patch". As a last resort, you can delete the whole custom character and recreate it again - sometimes this is the only way to get rid of incomprehensible errors.
 
Stanislav Korotky:

Try it on different builds of the terminal. All this looks like low-level errors of custom symbols API (in particular, messages from history and ticks are generated by the terminal itself). As for the message from the expert "Tick rewind bug" - I wrote about a similar bug (apparently, it is not fixed):

Since there is a source, you can study the problem and try to come up with a "patch". As a last resort, you can delete the whole custom character and recreate it again - sometimes this is the only way to get rid of obscure bugs.

I'm already used to castoms and tester being one continuous bug.

 
Rorschach:

Journal:

HistoryCache 'EqAUDNZD' invalid container header [0]

HistoryBase 'EqAUDNZD' invalid container (1970.01.01) found (off: 18881, size: 28209, file: 4295014386)

Experts:

CustomRatesUpdate failed: 0


ps Over half a year of tick history never read once.

ps2 I changed WriteToFile to write to an array, but these errors appear

Log:

Ticks future price EqAUDNZD (tick: 2021.11.25 06:00:00:00, last: 1970.01.01 00:00:00.000) 1.09038/1.09059/0.00000

Experts:

Tick rewind bug, 2021.03.30 17:15:19

Can you please advise, have you found a way to solve this problem?

 
GT56:

Can you please tell me if you have found a way to solve this problem?

As for "invalid container" - this is a kernel error, we can hardly do anything about it.

The "Tick rewind bug" is generated by the Expert Advisor itself, when CopyTicksRange returns old ticks in the array (with time earlier than requested) - it can probably be ignored somehow. I don't have a ready solution.

 

Good afternoon, Stanislav!

In general, thank you very much for the article and the work done, I found a lot of new things!

Can you tell me where in the code to look for the logic of the formation of reversal bars in RENCO, I've been struggling with this for a month in the tester, I thought I would find a way to simply bypass them with signals, but not so.... ) I am a beginner in programming, so if you can poke a finger specifically, I would be grateful.

Why couldn't we just leave OPEN as it is, why move it on reversals? It would be much easier with a tester, and in general. Is it historically so with renko? And is there any practical use in it, except for "correctness"?

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