BarIndex = 0

• 11/21/2019 at 9:26 AM #113284
  csntrader

  Hi,

  I’m so confused over the meaning of (BarIndex = 0)?

  Can we rewrite the code below without having BarIndex?

  Thanks!

  BarIndex

  IF BarIndex = 0 THEN XClose = Open XOpen = (Open + Close) / 2 ELSE XClose = Open XOpen = (Open + Close + high + low) / 4 ENDIF

  1 2 3 4 5 6 7 8 9 10

  IF BarIndex = 0 THEN XClose = Open XOpen = (Open + Close) / 2   ELSE   XClose = Open XOpen = (Open + Close + high + low) / 4   ENDIF

   

  

  csntrader

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  11/21/2019 at 10:25 AM #113293
  robertogozzi

  No, BarIndex is needed.

  BarIndex is the very first bar when you load an indicator or a strategy. In your case you need it to start the HA sequence.

  If you have instructions to be executed only when your code is loaded and not the next candles, well… BarIndex is what you need.

  IntraDayBarIndex is another constant that returns 0 when it’s the first intraday bar of the day.

  IntraDayBarIndex restarts from zero each new day, while BarIndex starts from 0 when you first execute your code and ALWAYS increases.

  

  robertogozzi

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  11/21/2019 at 4:03 PM #113326
  csntrader

  Okey, great! 🙂

  Thank you!

  

  csntrader

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  11/21/2019 at 7:34 PM #113353
  GraHal

  robertogozzi wrote:

  BarIndex starts from 0 when you first execute your code

  Is above true even allowing for preload bars (default preload bars = 2000 in a strategy?) or would we need to use defparam preloadbars = 0 in a strategy?

  

  GraHal

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  11/21/2019 at 7:38 PM #113356
  robertogozzi

  Yes, it’s true no matter how many PRELOADBARS. If PreLOadBars > 0 then BARINDEX 0 will be that very first preloaded bar.

  If you create a simple indicator:

  RETURN BarIndex

  1	RETURN BarIndex

  and go back to the very first displayed bar on the chart, you’ll see what’s its BARINDEX value.

   

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  GraHal

  

  robertogozzi

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