ProRealTime – Bollinger Band – Built In Indicator

Bullan · 2017-09-06T14:27:14+00:00

Hi there Does anyone have the code for the standard/built in Bollinger Band indicator within Prorealtime? For some reason, it provides a significantly different reading/level to anything else I compare (compared to 3 other platforms/brokers) it to on identical settings. Any help would be appreciated. Thanks Andrew

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09/06/2017 at 3:27 PM #45644 quote

Bullan
Participant

Junior

Hi there

Does anyone have the code for the standard/built in Bollinger Band indicator within Prorealtime? For some reason, it provides a significantly different reading/level to anything else I compare (compared to 3 other platforms/brokers) it to on identical settings.

Any help would be appreciated.

Thanks

Andrew

09/06/2017 at 4:14 PM #45647 quote
Nicolas
Keymaster

Legend
Here is the code of the Bollinger Bands:
```
period = 20
dev = 2.0
data = customclose
MA = average[period](data)
BolUp = MA+STD[period]*dev
BolDn = MA-STD[period]*dev

RETURN BolUp, BolDn
```
09/06/2017 at 4:19 PM #45648 quote

Bullan
Participant

Junior

Thanks a lot Nicolas

04/22/2018 at 9:44 AM #68924 quote

Pi
Participant

Junior

I know this is an “old” post, but I react anyway:

Maybe the difference is in the MA. PRT uses expMovAv (exponentialAverage) and Nicolas uses SimpMovAv (Average) I think.

Gr. Pieter

04/22/2018 at 7:14 PM #68937 quote

Nicolas
Keymaster

Legend

@Pi

Did you spot any difference between this code and the original Bollinger Bands of the platform?

I confirm that BB uses SMA.

04/23/2018 at 1:42 PM #68993 quote
Pi
Participant

Junior
Hi Nicolas,

I don’t have the PRT code, but I just compared the PRT BB and your BB in one chart and saw a different outcome.

Then I changed your BB SimpMovAv into a expMovAv, and the outcome was the same as the PRT BB. So then I knew.

I now made a combination indicator with BB and Keltner (both with the same SimpMovAv) so that I can easily change the periods, the BB deviation and the Keltner ATR-percentage with one action without opening the probuilder. (therefor you have to create indicator parameters named “per” (period) “dev” (BB deviation) and “ATR” (ATR-percentage)

Pieter
```
// you have to create indicator parameters named "per" (period) "dev" (BB deviation) and "ATR" (ATR-percentage)

period = per
dev = dev
data = customclose
MA = average[period](data)
BolUp = MA+STD[period]*dev
BolDn = MA-STD[period]*dev
 
MiddleMovingAverage=Average[per](close)
UpperKchannel=MiddleMovingAverage+ATR*AverageTrueRange[per](high)
LowerKchannel=MiddleMovingAverage-ATR*AverageTrueRange[per](low)



RETURN bolup as "BOLsim++", ma as "BOLkeltMA",  BolDn as "BOLsim--",     UpperKchannel AS "KeltSim hi",LowerKchannel AS "KeltSim Lo"
```
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