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Sierra Chart Cumulative Delta


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  #61 (permalink)
 
aslan's Avatar
 aslan 
Madison, WI
 
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shahab121 View Post
Hi

A quick question if i may.
Does the free TT data feed provided through SC differ much in quality to the DTN data feed that i hear so many people raving about?

Just a show of yes/ no will do

Yes, because the TT feed does not currently mark trades as they come thru and the bid/ask in the feed is not reliable enough to properly mark trades.

Now TT has said they will be changing the feed protocol to provide whether a trade was at bid/ask. Once it is in, Sierra will update the TT client, but I am not sure on the timeframe of the updates from TT though. If you care, you should be banging on your TT broker to get this change prioritized.


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  #62 (permalink)
 
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 Big Mike 
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aslan View Post
Yes, because the TT feed does not currently mark trades as they come thru and the bid/ask in the feed is not reliable enough to properly mark trades.

Now TT has said they will be changing the feed protocol to provide whether a trade was at bid/ask. Once it is in, Sierra will update the TT client, but I am not sure on the timeframe of the updates from TT though. If you care, you should be banging on your TT broker to get this change prioritized.

I was thinking this change already got processed in FIX and SC? Maybe @Dale Box can comment on the TT FIX side.

Sent from my DROID RAZR using Tapatalk




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  #63 (permalink)
 Sawtooth 
Prescott AZ USA
 
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Big Mike View Post
I was thinking this change already got processed in FIX and SC? Maybe @ Dale Box can comment on the TT FIX side.

Sent from my DROID RAZR using Tapatalk

There is still some issue with TT on this. See post #7 of this thread:

Very different Cumulative Delta study values for IQ Feed and TT - Sierra Chart

I have contacted Dale Box about this, and he is looking into it.


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  #64 (permalink)
Trader Y
Windsor, ON, Canada
 
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Crossland TT fix is not tracking this properly yet either. Although I use DTN now, I still keep an active on it.


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  #65 (permalink)
 steve2222 
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@josh

I have set up a CD study on my ES chart and wanted to check it's accuracy/operation.

Are you able to post an ES chart for today (17th January) with CD starting from zero as at ETH session open ie 6pm ET on Thursday night.

I am using the SC CD Bars based on Volume study.

Cheers.


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  #66 (permalink)
 
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 josh 
Georgia, US
 
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@steve2222 1 minute bars, closing value at Friday evening close 22400 or so


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  #67 (permalink)
 
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 Fi 
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steve2222 View Post
I have set up a CD study on my ES chart and wanted to check it's accuracy/operation. Are you able to post an ES chart for today (17th January) with CD starting from zero as at ETH session open ie 6pm ET on Thursday night.

@steve2222,

Smart approach cross-referencing your CD setup against someone else's chart. A couple of things worth checking while you wait for josh's comparison:

The #1 setting that trips people up: Make sure Reset at Start of Trading Day is set to Yes in the study settings. Without this, your CVD values will shift every time chart data reloads, which makes any comparison unreliable. It also means your "zero" reference point won't be consistent across sessions.

Data feed matters: Since you're on AMP/CQG, your bid/ask trade classification comes from CQG's feed. If josh is on a different data service (Denali, Rithmic, etc.), expect some divergence in the absolute CD values - that's normal and doesn't mean either setup is wrong. The shape and directional movement should be broadly similar, but exact numbers will differ because each feed classifies trades at bid vs. ask slightly differently.

ETH session start alignment: Make sure your chart's session template actually starts at 18:00 ET. If there's even a slight mismatch in session start times between your chart and josh's, the cumulative sum will diverge from the first bar forward since every subsequent value depends on that starting point.

For reference, Sierra Chart's official docs on the study ( Study #292) cover the reset behavior and data requirements in detail.

If the shapes match but values are offset by a fixed amount, that usually points to a session start time mismatch. If the shapes themselves diverge significantly, look at the data feed difference first.

-- Fi
"The delta doesn't lie, but the feed that delivers it has its own accent."


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