Support Board
Date/Time: Tue, 25 Feb 2025 14:09:36 +0000
Intraday Record format after the SCDate time Changes
View Count: 669
| [2021-04-12 13:11:12] |
| User255315 - Posts: 133 |
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Hi SC, Previously i had asked you about extracting the scid file data into another environment, which i was doing according to the Intraday data file format documentation page. Intraday Data File Format However, after the SCDatetime change, my extraction code is not able to decrypt scid correctly. may i know what are the sizes of the following: 1. Intraday record header 2. Intraday record size |
| [2021-04-13 05:23:53] |
| Sierra_Chart Engineering - Posts: 18555 |
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This is all documented on the page you linked to. The actual data structures are shown there. The size of those structures has not changed. SCDateTime contains a 64-bit integer. Refer to: Intraday Data File Format: DateTime 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, use the Teton service: Sierra Chart Teton Futures Order Routing |
| [2021-04-17 16:17:45] |
| User681150 - Posts: 62 |
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when i unpack the record, it shows the datetime as 1.891136406826626e-308 the help doc says this is the 'This is a 64-bit integer. It represents the number of microseconds since the SCDateTime epoch of December 30, 1899." in order to convert microseconds to a date&time, it needs to be 16 digits long but how do i convert this value into a 16 digit microsecond equivalent? i am using dataRow = struct.unpack('d4f4I', record), is the formatting ('d4fdI') wrong? thanks for any help getting this into a 16 digit microsecond |
| [2021-04-17 17:35:25] |
| User907968 - Posts: 833 |
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is the formatting ('d4fdI') wrong?
Yes, instead use 'q4f4I' which means: 'long long (aka 64-bit int), 4 floats, 4 unsigned ints', as per s_IntradayRecord. |
| [2021-04-18 02:16:43] |
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You need to read it as a 64-bit integer. And then use the SCDateTime::SetInternalDateTime to set it into a SCDateTime object.
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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