Bollinger Band % for ProScreener

quokkasoccer · 2022-04-06T05:30:29+00:00

Hello all, I am trying to use the bollinger % indicator in ProScreener, but It is not possible. ‘Error: The Indicator that you have selected is not available in ProBuilder Language. Please choose a different indicator.’ This is a very useful indicator for system building, especially when you can select the source and moving average type. Does anyone have a version of this indicator compatible for ProBuilder or some sort of workaround? Any help much appreciated!

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04/06/2022 at 6:30 AM #191299 quote

quokkasoccer
Participant

New

Hello all,

I am trying to use the bollinger % indicator in ProScreener, but It is not possible.

‘Error: The Indicator that you have selected is not available in ProBuilder Language. Please choose a different indicator.’

This is a very useful indicator for system building, especially when you can select the source and moving average type.

Does anyone have a version of this indicator compatible for ProBuilder or some sort of workaround?

Any help much appreciated!

04/06/2022 at 8:39 AM #191303 quote
robertogozzi
Moderator

Legend
You can make this indicator to be CALLed:
```
// Bollinger BB%
//
DEFPARAM CalculateOnLastBars = 1000
p       = 20
dev     = 2.0
BollInf = Average[p,0](close) - (dev * std[p](close))
BollSup = Average[p,0](close) + (dev * std[p](close))
pB      = ((close - BollInf) / (BollSup - BollInf)) * 100
return pB AS "Boll BB %",80 AS "Ob",20 AS "Os"
```
or you can embed it in your screener (after removing RETURN and DEFPARAM).

quokkasoccer thanked this post
04/06/2022 at 8:55 AM #191305 quote

quokkasoccer
Participant

New

Thank you Roberto!

Would it be possible to change the method used to calculate the bollinger bands? Such as an EMA or WMA?

Screen-Shot-2022-04-06-at-15.53.32.png

04/06/2022 at 9:00 AM #191307 quote

robertogozzi
Moderator

Legend

Yes, replace 0 in Average[p,0] with any value from 0 to 8 as described at https://www.prorealcode.com/documentation/average/.

quokkasoccer thanked this post

04/06/2022 at 10:07 AM #191316 quote

quokkasoccer
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New

Thank you Roberto, very helpful
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