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issue with subtracting overlay data

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[2024-04-19 15:56:38] #1 [Go To First Post]
jivetrader - Posts: 410
Hi, you will see from the attached that overlaying the VPOC value from source chart #14 works fine (value=5038.00). However, subtracting this value from its previous value results in a zero output. Please lmk if you need more information. Thanks

[2024-04-19 17:12:56] #2 [Go To First Post]
John - SC Support - Posts: 36238
There is nothing attached, so we are not sure what you are referring to. Also, how are you doing the subtraction? For the most reliable, advanced, and zero cost futures order routing, use the Teton service: Sierra Chart Teton Futures Order Routing

[2024-04-22 04:14:16] #3 [Go To First Post]
jivetrader - Posts: 410
Apologies, please see attached.


SPOL calc text issue1.png / V - Attached On 2024-04-22 04:14:00 UTC - Size: 226.47 KB - 56 views

[2024-04-22 15:29:37] #4 [Go To First Post]
John - SC Support - Posts: 36238
In your "Study Subgraphs Difference" study you are using the same subgraph for "Input Study 1" and "Input Study 2", therefore a result of 0 is correct. For the most reliable, advanced, and zero cost futures order routing, use the Teton service: Sierra Chart Teton Futures Order Routing

[2024-04-23 01:27:35] #5 [Go To First Post]
jivetrader - Posts: 410
Yes, same input, but the 2nd one is offset by 1 period, and the source chart is has a daily timeframe. Hence I am trying to see the difference of the current VPOC minus the previous period VPOC.

[2024-04-23 05:27:37] #6 [Go To First Post]
jivetrader - Posts: 410
RESOLVED- In the current day's example, VPOC happens to equal VPOC[-1] by coincidence, hence the zero value. When tested with a lookback period of 2 or more, the value changes as it should. Thanks and apologies for your time.

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