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#466965 - 07/10/17 23:59 Help for Bollinger Band Width
Alessio Offline
Newbie

Registered: 06/19/15
Posts: 6
Hi guys, I'd like write the code for Bollinger Band Width indicator, but I haven't the ability.
Has someone written yet?

Thanks

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#467017 - 07/12/17 17:49 Re: Help for Bollinger Band Width [Re: Alessio]
BobbyT Offline
Junior Member

Registered: 06/30/17
Posts: 68
Here is the call to bollinger bands from the manual:
Code:
BBands(vars Data, int TimePeriod, var NbDevUp, var NbDevDn, int MAType)


The return values are stored in: rRealUpperBand, rRealLowerBand, rRealMiddleBand.

Call BBands and subtract rRealLowerBand from rRealUpperBand and viola, bollinger band width.

Cheers,
BobbyT

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#467059 - 07/14/17 07:54 Re: Help for Bollinger Band Width [Re: BobbyT]
Alessio Offline
Newbie

Registered: 06/19/15
Posts: 6
Thanks for your help, I'll try to write something.

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#467061 - 07/14/17 08:51 Re: Help for Bollinger Band Width [Re: Alessio]
Dalla Offline
Member

Registered: 02/24/17
Posts: 211
Most sources I find use the formula

Band Width = (Upper Bollinger Band - Lower Bollinger Band) / Middle Bollinger Band

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