Bollinger Screener Bug

• 02/22/2022 at 2:27 PM #188657
  Keyeming

  Hello Nicolas,

   

  Why does this screener does bring back any result  ?

  ecartbol = Bollingerup[60](close)-Bollingerdown[60](close)
  SCREENER[ecartbol < average[200](ecartbol)]

  Thank you for your feedback

  

  Keyeming

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  02/22/2022 at 3:32 PM #188662
  robertogozzi

  Because SCREENERS with IG have a 254-bar data history limit (1024 with PRT direct).

  You are using a 200 + 60  = 260 periods. Try using 50 periods for BB.

  You can still use 200 periods with SMA. Should you want to use an EMA, then you could barely use 80 periods for the average, since EMAs require many more bars to be calculated.

   

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  robertogozzi

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