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Ninja Trader / Zenfire / Mirus Display Update Interval 0.1


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Ninja Trader / Zenfire / Mirus Display Update Interval 0.1

  #1 (permalink)
 resist 
Berlin Germany /Alicante Spain
 
Experience: Intermediate
Platform: NinjaTrader
Broker: DDT/Rithmic, Global/CQG, IB, Mirus(Ninja)/MarketDelta
Trading: Futures
Posts: 141 since Jan 2010
Thanks Given: 362
Thanks Received: 67

In NT 6.5 you could set display update interval to 0 ms - result was you could sometimes get a feeling to be realtime in the market.

I donīt know really why, in NT 7.0 this interval is set 0,1 ms - no big delay but enough NOT longer to see when prices were knocking again and again a resistance or bottom.
Is there any chance or trick - e.g. by coding - to "patch" this interval to 0 ms again in NT 7, too.
Iīm aware that this produces CPU usage but I think this further problem could be solved by using less indicators or higher class machine.
Iīm just testing a simple setup e.g. if one of two correlating underlyings is just falling much deeper than the other to buy the quicker (much deeper moved) when I see the pullback is beginning. That would be much easier with multiple chart with NT 7 but without latency (update interval 0.0) too.

If there are other Data Feeds / Trading package competing against Ninja which allow displaying the feed in real time I would appreciate any tip, too.

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  #3 (permalink)
 
TheWizard's Avatar
 TheWizard 
Houston, TX
Market Wizard
 
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resist View Post
In NT 6.5 you could set display update interval to 0 ms - result was you could sometimes get a feeling to be realtime in the market.

I donīt know really why, in NT 7.0 this interval is set 0,1 ms - no big delay but enough NOT longer to see when prices were knocking again and again a resistance or bottom.
Is there any chance or trick - e.g. by coding - to "patch" this interval to 0 ms again in NT 7, too.
Iīm aware that this produces CPU usage but I think this further problem could be solved by using less indicators or higher class machine.
Iīm just testing a simple setup e.g. if one of two correlating underlyings is just falling much deeper than the other to buy the quicker (much deeper moved) when I see the pullback is beginning. That would be much easier with multiple chart with NT 7 but without latency (update interval 0.0) too.

If there are other Data Feeds / Trading package competing against Ninja which allow displaying the feed in real time I would appreciate any tip, too.

Look under Properties (main chart, right click - about 1/2 way down the list of items with settings that can be changed). Hope this helps.

After all, it's what you learn AFTER you know it all, that counts!
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  #4 (permalink)
 resist 
Berlin Germany /Alicante Spain
 
Experience: Intermediate
Platform: NinjaTrader
Broker: DDT/Rithmic, Global/CQG, IB, Mirus(Ninja)/MarketDelta
Trading: Futures
Posts: 141 since Jan 2010
Thanks Given: 362
Thanks Received: 67


TheWizard View Post
Look under Properties (main chart, right click - about 1/2 way down the list of items with settings that can be changed). Hope this helps.

Thank you for your description where update interval can be geared, exactly that menu I described in previous post.

Please test yourself, scale ist unfortunately limited and ends at 0,1s; 0,0s is not longer possible (as it is in NT 6.5).
How to tune it again to 0,0s ????!!!!!

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  #5 (permalink)
 
TheWizard's Avatar
 TheWizard 
Houston, TX
Market Wizard
 
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resist View Post
Thank you for your description where update interval can be geared, exactly that menu I described in previous post.

Please test yourself, scale ist unfortunately limited and ends at 0,1s; 0,0s is not longer possible (as it is in NT 6.5).
How to tune it again to 0,0s ????!!!!!

My apology. You are correct. I noticed mine is set to 0.5
I tried changing it to 0.0 and got this message.
I set it back to 0.5 as it was before.

After all, it's what you learn AFTER you know it all, that counts!
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  #6 (permalink)
 
aslan's Avatar
 aslan 
Madison, WI
 
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The trick is to force NT to replot when you get a tick. This is a dangerous item if you don't know what you are doing, as you could start using way more CPU to do this. This trick only needs to be in ONE indcator. At the end of the OnBarUpdate() method, add the following:

 
Code
if (ChartControl != null)
    if (ChartControl.ChartPanel != null)
        ChartControl.ChartPanel.Invalidate();
This code will force the chart to refresh on each tick, so user beware. Your initial comment, that CPU will be fine if you manage the number of charts/indicators is spot on. To be sure you only do this in one indicator, you could have an indicator, that just refreshes the screen, but I have not tried that.

Note: This will do nothing for the DOM update interval.

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  #7 (permalink)
 MetalTrade 
 
Posts: 1,055 since May 2010

Very interesting question, did you asked ninjatrader (support forum?)

thanks

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  #8 (permalink)
 
aslan's Avatar
 aslan 
Madison, WI
 
Experience: Advanced
Platform: ALT
Trading: ES
Posts: 625 since Jan 2010
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Well documented in forums. This is one of the performance improvements in NT7. Of course the improvement comes from restricting updates, not actually doing anything better. That said, I think it was the right choice for NT, as many people don't understand the implications and get themselves in trouble with too many charts/indicators. The only issue is they do not provide a way for those that do know what they are doing to change it to a lower value.

They have the same feature/issue with the DOM and Time & Sales.

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  #9 (permalink)
 MetalTrade 
 
Posts: 1,055 since May 2010

I would like to know if multicharts is doing this ?

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  #10 (permalink)
 
RJay's Avatar
 RJay 
Hartford, CT. USA
 
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aslan View Post
The trick is to force NT to replot when you get a tick. This is a dangerous item if you don't know what you are doing, as you could start using way more CPU to do this. This trick only needs to be in ONE indcator. At the end of the OnBarUpdate() method, add the following:

 
Code
if (ChartControl != null)
    if (ChartControl.ChartPanel != null)
        ChartControl.ChartPanel.Invalidate();
This code will force the chart to refresh on each tick, so user beware. Your initial comment, that CPU will be fine if you manage the number of charts/indicators is spot on. To be sure you only do this in one indicator, you could have an indicator, that just refreshes the screen, but I have not tried that.

Note: This will do nothing for the DOM update interval.

Hi Aslan,

Being a volume nut, I have looked for a way to force updates with changes in volume.

Will this patch work in the OnMarketData section as well??

Thanks,

RJay

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Last Updated on October 18, 2010


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