GEOMETRIC STANDARD DEVIATION BANDS v1 by @XeL_Arjona — Petunjuk oleh 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

Skrip sumber terbuka

Dalam semangat TradingView yang sebenar, penulis skrip ini telah menerbitkannya dengan menggunakan sumber terbuka supaya pedagang-pedagang dapat memahami dan mengesahkannya. Sorakan kepada penulis! Anda dapat menggunakannya secara percuma tetapi penggunaan semula kod ini dalam penerbitan adalah dikawalselia oleh Peraturan Dalaman. Anda boleh menyukainya untuk menggunakannya pada carta.

Penafian

Maklumat dan penerbitan adalah tidak dimaksudkan untuk menjadi, dan tidak membentuk, nasihat untuk kewangan, pelaburan, perdagangan dan jenis-jenis lain atau cadangan yang dibekalkan atau disahkan oleh TradingView. Baca dengan lebih lanjut di Terma Penggunaan.

Ingin menggunakan skrip ini pada carta?

//@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)