I want to insert "Bollinger Bands Width" [SOLVED]

cktsui888 · Mar 29 2017

I only see "Bollinger Bands" in insert study. I want to insert "Bollinger Bands Width" . Which study I should use? Thanks!

ABC · Mar 29 2017

cktsui888,

as far as I am aware there is no build in study for the Bollinger Width, but you can accomplish this with a quick modification of the build in Bollinger Bands indicator.

Code: Select all

inputs:

	BollingerPrice	( Close ),

	Length			( 20 ),

	NumDevsUp		( 2 ),

	NumDevsDn		( -2 ),

	Displace		( 0 ) ;



variables:

	midLine		( 0 ),

	vStdDev		( 0 ),

	bbWidth 		( 0 ),

	upperBand 		( 0 ),

	lowerBand 		( 0 ) ;



midLine = AverageFC( BollingerPrice, Length ) ;

vStdDev = StandardDev( BollingerPrice, Length, 1 ) ;

upperBand = midLine + NumDevsUp * vStdDev ;

lowerBand = midLine + NumDevsDn * vStdDev ;



bbWidth = upperBand - lowerBand ;



if Displace >= 0 or CurrentBar > AbsValue( Displace ) then

begin

	Plot1[Displace]( bbWidth, "BB Width" ) ;

end ;

Regards,

ABC

cktsui888 · Apr 05 2017

Thanks