Support Board
Date/Time: Thu, 16 Jan 2025 18:50:49 +0000
Advance-Decline Line Issues
View Count: 2637
| [2017-11-10 05:33:47] |
| vinny_mycousin - Posts: 2 |
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Hello, I have 2 questions. First, I have been having trouble with getting my NISS-NYSE data on Sierra Chart to match up to other data services' Advance-Decline lines. The numbers seem to be different early in the day and then they eventually sync up with other data service providers. A specific example follows: I know someone who uses TradeStation and his NYSE A/D Line bottomed out at around -1700 early in the day session on November 9, 2017. The NISS-NYSE chart that I have been using with Sierra Chart bottomed out at around -1100 to -1200 at the same time. However, the discrepancy between the two data providers seemed to go away by around 8:00 AM Central Time on November 9, 2017. I have attached a picture that shows my Advance-Decline line (immediately below) and the TradeStation Advance-Decline line (bottom). What is the reason for this difference? FYI, the Sierra Chart picture is using Pacific Time, and the TradeStation chart is using Central Time. http://www.sierrachart.com/image.php?Image=1510291010912.png Second, I looked into the Advance/Decline line for Sierra Chart on the Market Statistics page found here: https://www.sierrachart.com/index.php?page=doc/SCMarketStatistics.php. On that page, it says that the NISS symbol provides the difference between the ADV and the DECL. It also says that to get the "true Advance-Decline line," I have to add the Advance-Decline Line study to a chart with NISS as the symbol. I did this, and all that happened was a seemingly random line appeared and it had nothing to do with the Advance-Decline line. This is included in the Sierra Chart picture attached above. What does the page mean by "true Advance-Decline line"?. Could this be the reason the Sierra Chart NYSE Advance-Decline differs from the TradeStation Advance-Decline? Please let me know. Thanks a lot for reading this. I'm sure you are very busy, and I look forward to hearing back about this issue. Best, Vinny |
Private File |
| [2017-11-10 19:11:52] |
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1. There are going to be differences. But the Sierra Chart calculations are very accurate and you should be questioning what you see elsewhere. Refer to: Sierra Chart Market Statistics: Market Statistics Calculations Compared to Other Data Services If you are looking for more extreme values we recommend using this symbol which combines multiple exchanges: NISS-NYSE_NASDAQ_NYSEMKT We also did a code review earlier this morning to ensure that the calculations are stable and accurate when there are potential issues with the underlying data feed. No problems were found. 2. It sounds like you do not want to use that particular study and we recommend not because it does not sound like what you need. Here is the documentation for it: Advance Decline Line 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 |
| [2017-11-10 23:30:18] |
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We spent some time looking at the images you have attached. In our experience, market statistics from other providers near the open are not even valid. Often they are wildly off and nonsensical. Sierra Chart will consistently deliver valid values at that time. Also the market was not even open at this time other than limited premarket trading: 8:00 AM Central Time on November 9, 2017
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: 2017-11-10 23:31:13
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| [2017-11-13 17:49:21] |
| vinny_mycousin - Posts: 2 |
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Hello, Thank you very much for the help so far. I just looked at the pictures I originally attached, and I now realize that I meant to say 8:00 AM Pacific Time, not Central Time. Would this information change anything in your original response? If not, just let me know and I will understand. Thanks again for the help so far. Looking forward to hearing back. Best, Vinny |
| [2017-11-13 17:56:11] |
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No it does not change anything.
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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