Support Board
Date/Time: Thu, 16 Jan 2025 18:48:25 +0000
CalculateTimeSpanAcrossChartBars for remote chart
View Count: 2494
| [2017-09-02 07:05:27] |
| onnb - Posts: 662 |
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Would want to be able to calculate the span for a remote chart. I would provide the remote start/last indexes obviously. Any chance you can add option to provide chart number to this function? |
| [2017-09-02 11:10:50] |
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Will be in next release: void sc.CalculateTimeSpanAcrossChartBarsInChart(int ChartNumber, int FirstIndex, int LastIndex, SCDateTime& TimeSpan); Sierra Chart Support - Engineering Level Your definitive source for support. Other responses are from users. Try to keep your questions brief and to the point. Be aware of support policy: https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation For the most reliable, advanced, and zero cost futures order routing, *change* to the Teton service: Sierra Chart Teton Futures Order Routing |
| [2017-09-04 04:29:50] |
| onnb - Posts: 662 |
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what version is this in ?
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| [2017-09-04 18:40:00] |
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This will be in version 1608.
Sierra Chart Support - Engineering Level Your definitive source for support. Other responses are from users. Try to keep your questions brief and to the point. Be aware of support policy: https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation For the most reliable, advanced, and zero cost futures order routing, *change* to the Teton service: Sierra Chart Teton Futures Order Routing |
| [2017-09-19 04:29:46] |
| onnb - Posts: 662 |
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I've been working with this new method "CalculateTimeSpanAcrossChartBarsInChart" Seeing something strange which I am not sure of. I call the function with start and end indexes that are from a 1-tick chart. The timestamps of the start/end indexes, as seen in the tools value window on the tick chart are: StartIndex Timestamp: 14:40:59.003 EndIndex Timestamp: 14:42:00.041 EndIndex+1 Timestamp: 14:42:00.042 I get the span variable back and do something like this: int hour, minute, second; span.GetTimeHMS(hour, minute, second); In the above example I am getting 56 seconds Obviously those two minutes are continuous trading times. I am expecting 61 seconds, What am I missing? |
| [2017-09-19 05:27:08] |
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I call the function with start and end indexes that are from a 1-tick chart. Are these the indexes belonging to the chart specified by the ChartNumber parameter with the function?
Sierra Chart Support - Engineering Level Your definitive source for support. Other responses are from users. Try to keep your questions brief and to the point. Be aware of support policy: https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation For the most reliable, advanced, and zero cost futures order routing, *change* to the Teton service: Sierra Chart Teton Futures Order Routing |
| [2017-09-19 05:33:22] |
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The function doing the calculations does not have millisecond precision. We will add that if there are no unexpected complications. We think this is the reason for the problem.
Sierra Chart Support - Engineering Level Your definitive source for support. Other responses are from users. Try to keep your questions brief and to the point. Be aware of support policy: https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation For the most reliable, advanced, and zero cost futures order routing, *change* to the Teton service: Sierra Chart Teton Futures Order Routing Date Time Of Last Edit: 2017-09-19 05:33:38
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| [2017-09-19 05:51:18] |
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We have updated the function to do more precise calculations. The calculations were not designed for high precision as you were expecting. Sierra Chart Support - Engineering Level Your definitive source for support. Other responses are from users. Try to keep your questions brief and to the point. Be aware of support policy: https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation For the most reliable, advanced, and zero cost futures order routing, *change* to the Teton service: Sierra Chart Teton Futures Order Routing |
| [2017-09-19 15:33:17] |
| onnb - Posts: 662 |
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what version will this be available in?
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| [2017-09-19 18:00:32] |
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It is in the latest revision of Prerelease 1612 now.
Sierra Chart Support - Engineering Level Your definitive source for support. Other responses are from users. Try to keep your questions brief and to the point. Be aware of support policy: https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation For the most reliable, advanced, and zero cost futures order routing, *change* to the Teton service: Sierra Chart Teton Futures Order Routing |
| [2017-11-16 07:34:19] |
| onnb - Posts: 662 |
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I see the following scenario (by example) I am using CalculateTimeSpanAcrossChartBarsInChart on a 1 tick chart Start Session = 9:30:00 End Session = 9:00:00 The last tick of the prev session is 8:59:30 The 1st tick of the new session is 9:00:30 The 2nd tick of the new session is 9:00:30 Expecting 1 minute span. Getting 30 second span. I did a few more tests and from what I can see, the function does not count the time between the start of the session to the first tick - does that make sense? |
| [2017-11-16 07:38:42] |
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Expecting 1 minute span. Getting 30 second span. Sierra Chart Support - Engineering Level Your definitive source for support. Other responses are from users. Try to keep your questions brief and to the point. Be aware of support policy: https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation For the most reliable, advanced, and zero cost futures order routing, *change* to the Teton service: Sierra Chart Teton Futures Order Routing |
| [2017-11-16 07:42:07] |
| onnb - Posts: 662 |
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The timestamps are below The last tick of the prev session is 8:59:30 (index==100) The 1st tick of the new session is 9:00:30 (index==101) The 2nd tick of the new session is 9:00:30 (index==102) (Its a 1-tick chart so each tick is 1 bar) I call CalculateTimeSpanAcrossChartBarsInChart(chartnumber, 100, 101, span) |
| [2017-11-16 07:53:23] |
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Based on the session times, these timestamps cannot possibly exist in the chart: The 1st tick of the new session is 9:00:30 (index==101) The 2nd tick of the new session is 9:00:30 (index==102) Sierra Chart Support - Engineering Level Your definitive source for support. Other responses are from users. Try to keep your questions brief and to the point. Be aware of support policy: https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation For the most reliable, advanced, and zero cost futures order routing, *change* to the Teton service: Sierra Chart Teton Futures Order Routing |
| [2017-11-16 18:24:30] |
| onnb - Posts: 662 |
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My mistake, had a typo, see below The last tick of the prev session is 8:59:30 (index==100) The 1st tick of the new session is 9:30:30 (index==101) The 2nd tick of the new session is 9:30:30 (index==102) Start Session = 9:30:00 End Session = 9:00:00 I call CalculateTimeSpanAcrossChartBarsInChart(chartnumber, 100, 101, span) Date Time Of Last Edit: 2017-11-16 19:15:50
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| [2017-11-16 19:23:05] |
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A result of 30 seconds makes sense. The 1st tick of the new session is 9:30:30 (index==101) The 2nd tick of the new session is 9:30:30 (index==102) You probably will want to use this array to do your own calculations: http://www.sierrachart.com/index.php?page=doc/ACSIL_Members_Variables_And_Arrays.html#scBaseDataEndDateTime Sierra Chart Support - Engineering Level Your definitive source for support. Other responses are from users. Try to keep your questions brief and to the point. Be aware of support policy: https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation For the most reliable, advanced, and zero cost futures order routing, *change* to the Teton service: Sierra Chart Teton Futures Order Routing |
| [2017-11-16 19:37:31] |
| onnb - Posts: 662 |
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The time span between these chart bars would be considered 0.
That is understoodNotice that the call uses indexes 100 and 101 - CalculateTimeSpanAcrossChartBarsInChart(chartnumber, 100, 101, span) So the span is basically CalculateTimeSpanAcrossChartBarsInChart(chartnumber, 8:59:30, 9:30:30, span) with a 30 minute no trading period in between Let me try and be more clear about this Start of span, index 100: 8:59:30 End of session: 9:00:00 Start of session: 9:30:00 End of Span, index 101: 9:30:30 In this case, we are expecting to get 60 seconds 30 seconds from the start of the span to the end of the session 30 seconds from the start of the session to the end of the span Btw, it doesn't really matter of index 102 is in the same second as index 101. The time window between the start of the session and index 101 is not counted is where the question lies. For example, if index 102 was 9:30:35 we would get Span = 30 + 5 = 35 We would expect 30+30+5 = 65 Hope this makes it more clear. Date Time Of Last Edit: 2017-11-16 19:39:05
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| [2017-11-16 19:48:58] |
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The reason we made reference to index 102, is because that is involved in the calculation of the time span for 101. 30 seconds from the start of the session to the end of the span Sierra Chart Support - Engineering Level Your definitive source for support. Other responses are from users. Try to keep your questions brief and to the point. Be aware of support policy: https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation For the most reliable, advanced, and zero cost futures order routing, *change* to the Teton service: Sierra Chart Teton Futures Order Routing |
| [2017-11-17 05:25:58] |
| onnb - Posts: 662 |
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It does not work this way.
Not 100% clear on this - does that mean its a bug or was this the intended behaviour? Just seems strange that the start of the session would not be included as that time is part of the trading hours. |
| [2017-11-17 05:34:38] |
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This is the intended behavior. The time span is computed individually for each chart bar. Sierra Chart Support - Engineering Level Your definitive source for support. Other responses are from users. Try to keep your questions brief and to the point. Be aware of support policy: https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation For the most reliable, advanced, and zero cost futures order routing, *change* to the Teton service: Sierra Chart Teton Futures Order Routing |
| [2017-11-17 20:13:20] |
| onnb - Posts: 662 |
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This is the intended behavior.
Just pointing out that this behavior does not make sense to us. It appears logical to us that the time span between bar 100 and 101 would include all trading time from the start of bar 100 to the end of bar 101. Understand that you have your considerations regarding priorities and assumptions. That said, is this something you can review and reconsider? |
| [2017-11-19 22:24:12] |
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Onn, it may not make sense to you, but from the perspective of how it is designed, it is 100% correct. We simply cannot change this because there is a reliance on how it works. Refer to the updated documentation for the function for an explanation. You need to implement your own calculation method. Let us know what functions you need to support that. Sierra Chart Support - Engineering Level Your definitive source for support. Other responses are from users. Try to keep your questions brief and to the point. Be aware of support policy: https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation For the most reliable, advanced, and zero cost futures order routing, *change* to the Teton service: Sierra Chart Teton Futures Order Routing |
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