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Sierra vs. Ninja : why I chose .....


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Sierra vs. Ninja : why I chose .....

  #121 (permalink)
Frank R
Wash DC
 
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josh View Post
As if by magic, or perhaps divine inspiration, I found a setting in Sierra under "General Settings" that allows the user to change the chart update interval. I changed this from 500ms to 1ms, and look at her go now!!!!

Josh, does this setting default back to 40ms for you, after you set it at 1ms?

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  #122 (permalink)
 
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 josh 
Georgia, US
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Frank R View Post
Josh, does this setting default back to 40ms for you, after you set it at 1ms?

Yes 40ms is the lowest value.

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  #123 (permalink)
 
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 aslan 
Madison, WI
 
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Yes, 40 ms is min value

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  #124 (permalink)
 mongoose 
Chicago, IL
 
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Thought I had saw someone asking a question about tick charts forming differently on different data feeds, but I wondered if it was just the data feed causing the difference. So while I was bored today I compared ninja vs sierra on how tick charts form with the same Rithmic data feed (well not the same, one is my normal live feed with sierra and one is a ninja sim). I noticed the bars will not look the same, mostly due to the faster update time of sierra charts, does this make theirs more accurate? I don't know, maybe @josh will have more input on that. Here are to screen shots one of ninja and one of sierra, I used an 800 tick chart of oil since that has become very popular here from @VinceVirgil's great journal. The ninja chart is on top, and will be an hour behind since it is set to cst while my sierra is set to est.



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  #125 (permalink)
 
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 SierraChart 
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You need to make certain that the Session Times are the same between these 2 charts and you also need to make sure the counting of the ticks is from the same exact starting time between the charts.

You also need to make certain that you have tick by tick data in the Intraday data file:
Tick by Tick Data Configuration - Sierra Chart

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  #126 (permalink)
 mongoose 
Chicago, IL
 
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SierraChart View Post
You need to make certain that the Session Times are the same between these 2 charts and you also need to make sure the counting of the ticks is from the same exact starting time between the charts.

You also need to make certain that you have tick by tick data in the Intraday data file:
Tick by Tick Data Configuration - Sierra Chart

Yes I knew about the session time difference but did not think about the starting time of the 2 charts. Will have to check my settings for the tick by tick when I get home.

Still wondering if Sierra being a faster platform than Ninja would cause a difference in the tick charts, or even volume charts for that matter.

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  #127 (permalink)
 
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 josh 
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mongoose View Post
Still wondering if Sierra being a faster platform than Ninja would cause a difference in the tick charts, or even volume charts for that matter.

I can not imagine that it would. Following SC's advice above, I would:

1) ensure that the session times are identical. Preferably, load one day in each chart to keep it simple.
2) make sure "new bar at session start" is enabled in SC's chart settings
3) Use SC's "Chart Calculator" tool to measure the number of bars (it's in the settings) from the first to last, and use a similar tool in NT if it exists, or count the bars manually. This will ensure that the chart scaling, which may be different between the two, does not give the appearance of them being different when in fact they might be the same.
4) Make sure that you actually captured the Rithmic data in both platforms, and did not download historical data. In NT this historical data comes from only Zen-Fire if I recall, and the historical data from SC might be different.
5) If the data is live and after all this still does not match, it is possible that some live ticks are not coming through. Best to use a service like IQFeed where you can ensure an identical backfill, and compare that way.

Either way, short of NT dropping ticks real time, or the data feed itself not transferring some ticks real time (which I have seen before on some feeds), I do not think it's possible that the update speed would make any difference, because that has to do with updating charts, not capturing data, as far as I know.

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  #128 (permalink)
Fraois
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josh View Post
Yes 40ms is the lowest value.

Hi Josh, does it mean an automated system on Sierra Chart can't trade on real-time feeds and update data tick by tick but with 40ms interval instead?
Or it only affects traders who watch the charts and trade with their own eyes?
That's important to me...if this is true that means I can't arbitrage

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  #129 (permalink)
 
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 josh 
Georgia, US
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Fraois View Post
Hi Josh, does it mean an automated system on Sierra Chart can't trade on real-time feeds and update data tick by tick but with 40ms interval instead?
Or it only affects traders who watch the charts and trade with their own eyes?
That's important to me...if this is true that means I can't arbitrage

This is a very good question. I would ask over at the SC support board if I were you, and I would love to know the answer, just out of curiosity.

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  #130 (permalink)
 
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 SierraChart 
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Interesting this question is being asked now.

We are adding a new flag to the Sierra Chart advanced custom study and trading system interface (ACSIL), to cause the study function to be called immediately on every trade and order update. This will allow the trading system to react to new market data and order updates.

The should be used with caution though because it will increase CPU load.

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