GEOMETRIC STANDARD DEVIATION BANDS v1 by @XeL_Arjona — Indicateur par xel_arjona

geometricstandarddeviation standarddeviation bands volatility lognormal distribution mean average statistics statistical bollingerbands xelingerbands xel xel_arjona deviation geometric

GEOMETRIC STANDARD DEVIATION BANDS
Ver.1 By Ricardo M Arjona @XeL_Arjona

DISCLAIMER:

The Following indicator/code IS NOT intended to be a formal investment advice or recommendation by the author, nor should be construed as such. Users will be fully responsible by their use regarding their own trading vehicles/assets.

The embedded code and ideas within this work are FREELY AND PUBLICLY available on the Web for NON LUCRATIVE ACTIVITIES and must remain as is.

WHAT'S THIS?

This IS NOT the wheel "Re-Invention"... This is exactly what the name says: A pair of Envelope Bands to measure "volatility", constructed at statistical relation from within price series and their Rolling back MEAN (Simple Moving Average). YES, What Mr. Bollinger did and put it's name to this simple, cleaver and popular formula.

This time, I took the time to make another simple mod, but seems to me to be quite functional in REAL VOLATILE assets like in the example chart: TO USE THEIR GEOMETRIC MODE!!

Cheers!
Any feedback or public modification(s) are quite welcome to the community....!

@XeL_Arjona
Apr 28 2016

Script open-source

Dans le véritable esprit de TradingView, l'auteur de ce script l'a publié en open-source, afin que les traders puissent le comprendre et le vérifier. Bravo à l'auteur! Vous pouvez l'utiliser gratuitement, mais la réutilisation de ce code dans une publication est régie par le règlement. Vous pouvez le mettre en favori pour l'utiliser sur un graphique.

Clause de non-responsabilité

Les informations et les publications ne sont pas destinées à être, et ne constituent pas, des conseils ou des recommandations en matière de finance, d'investissement, de trading ou d'autres types de conseils fournis ou approuvés par TradingView. Pour en savoir plus, consultez les Conditions d'utilisation.

Vous voulez utiliser ce script sur un graphique ?

//@version=2
study("GEOMETRIC STANDARD DEVIATION BANDS v1 by @XeL_Arjona", shorttitle="gSDB", overlay=true)
src = input(title="Candle Source:",type=source,defval=close)
p   = input(title="Rollback Mean:",defval=21)
s   = input(title="Deviation Envelope:",defval=2)
et  = input(title="EnvTYPE: [1]Cl | [3]Avg | [3]HiLo:",defval=2,minval=1,maxval=3)
// VARIABLES
cl = log(src)
hi = iff(et==1, log(src), iff(et==2,log(high), log(avg(src,high))))
lo = iff(et==1, log(src), iff(et==2,log(low), log(avg(src,low))))
// FUNCTIONS
// Standard Deviation from Custom Mid Point (Custom Bollinger)
cStdDev(array,mid,lb,mult,dir) =>
    std = stdev(array,lb)
    d = dir ? 1 : -1
    band = mid + d * mult * std
mean    = exp(sma(cl,p))
up      = exp(cStdDev(hi,sma(hi,p),p,s,true))
dn      = exp(cStdDev(lo,sma(lo,p),p,s,false))
// PLOT DIRECTIVES
plot(mean,color=blue,transp=0)
uband = plot(up,color=blue,transp=55)
dband = plot(dn,color=blue,transp=55)
fill(uband,dband,color=navy,transp=96)