Adjust standard deviation of bollinger bands

• 02/23/2022 at 4:24 PM #188715
  josward1

  Hello, I’m trying to add Bollinger bands into my code, I have used the “insert function” tab to add the upper and lower band into my code. It gives the option to select the period in brackets. How can I adjust the standard deviation?

   

  if mastrategy then //moving average trade entry
  macrossbuy = open crosses over BollingerUp[20](close)
  macrosssell = open crosses under BollingerDown[20](close)

   

  I want the bot to take a buy trade when the price crosses over the upper bollinger, and a sell trade when the price crosses under the the lower bollinger.

  I need to be able to adjust both the the bollinger band period and standard deviation.

   

  thanks

   

  

  josward1

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  02/23/2022 at 6:14 PM #188719
  robertogozzi

  You can’t change the built-in standard deviation. To do this, you need to code the BB yourself. This the code to be used in your strategy:

  BB = 20 //20 periods BBdev = 2.0 //2.0 standard deviation BBavg = average[BB,0](close) //BB mean (middle line) UPboll = BBavg + ((std[BB](close)) * BBdev) //BB Upper Band LOboll = BBavg - ((std[BB](close)) * BBdev) //BB Lower Band

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  BB     = 20                                 //20   periods BBdev  = 2.0                                //2.0  standard deviation BBavg  = average[BB,0](close)               //BB mean (middle line) UPboll = BBavg + ((std[BB](close)) * BBdev) //BB Upper Band LOboll = BBavg - ((std[BB](close)) * BBdev) //BB Lower Band

  

  robertogozzi

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  02/24/2022 at 12:50 PM #188767
  robertogozzi

  Do not double post. Ask your question only once and only in one forum. All double posts will be deleted anyway so posting the same question multiple times will just be wasting your own time and will not get you an answer any quicker. Double posting just creates confusion in the forums.

  Below you can read the basic rules (highlighted in yellow).

  Thank you 🙂

  You’ve already been given an answer (above).

   

   

  

  robertogozzi

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  02/24/2022 at 4:46 PM #188781
  josward1

  The double post was accidental i havent used this platform much at all and couldn’t see that my first post successfully got submitted.

  

  josward1

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