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Old 05-16-2018, 01:46 PM   #1
vanderhe68
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Default Draw object occurring on wrong bar only on live data

Hello,

I have built a custom indicator that brings in 3 different bar objects, compares them and then draws an arrow on the primary bar when conditions are met. When I refresh the indicator on historical data, the draw arrow is put on the correct primary bar and everything appears correct.

When I am watching the indicator in real time, it always seems to draw the arrow on the -1 or prior bar. My value on all draw statements is "0"

Something is different about realtime vs. historical. Can you please point to what I might be missing?

Thank you!
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Old 05-16-2018, 02:01 PM   #2
NinjaTrader_Paul
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Hello vanderhe68,

Thanks for your post.

Are you running the script with CalculateOnBarClose = false; ?

What bar type are you using?

Have you added print statements to time stamp when the arrow is drawn (in real time)?

Here is a link to our debugging tips: https://ninjatrader.com/support/foru...ead.php?t=3418

edit: Corrected for NT7
Last edited by NinjaTrader_Paul; 05-16-2018 at 02:04 PM.
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Old 05-16-2018, 02:02 PM   #3
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Hello vanderhe68,

My previous post was based on NT8. I will edit the reply for NT7.
Sorry for any confusion.
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Old 05-17-2018, 08:21 AM   #4
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Thank you,

I am using Minute bars for all bar objects. No, I had Calculateonbarclose set to True. That might explain what is happening. I will try setting to False. If I remember correctly, setting to false takes a toll on the CPU?

Also, what changes in NT8 with all of this?

Thank you!
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Old 05-17-2018, 08:55 AM   #5
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Hello vanderhe68,

Thanks for your reply.

With the script running with CalculateOnBarClose = false then the script would run different historically than in real time. All historical performance is done with CalculateOnbarClose = true then as soon as you connect to live data, the mode would change to on each tick.

As you were using CalculateOnbarClose = true I would expect to see the same behavior live and historically.

Yes, CalculateOnBarClose = false would use more CPU than operating in True.

Are you drawing the arrow when BarsInProgress == 0?
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