pequet

Day Length Variations v1.0 (TradingView Anomalies)

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// Created by @pequet (https://www.tradingview.com/u/pequet) May 30 2016 
// https://github.com/pequet/day-length-variations
// MIT License
//@version=2
//
// Day Length Variations
// Shown here are the variations on a day length and a week length. 
//
// The time variations observed are an effect of the Candle Thief: 
// https://www.tradingview.com/u/pequet/#published-scripts 
//

study("Day Length Variations v1.0 (TradingView Anomalies)", shorttitle="Day Length Variations v1.0")

// functions
OnePeriod() => ismonthly ? 40320*interval  
     : isweekly ? 10080*interval
     : isdaily ? 1440*interval
     : interval
OneBarTime(i) =>
    nz(time[i]-time[i+1])/60000
HowManyActualBarsAgoWas(t) => // t in minutes
    idealBar = OnePeriod()
    totalBars = t / idealBar 
    // countdown
    tLeft = t
    actualBars = 1
    for i = 1 to totalBars
        tLeft := tLeft - ((time[i-1]-time[i])/60000)
        if tLeft > 0
            actualBars := actualBars + 1 
    actualBars

// how many bars ago was 1 day (minutes)  
plot(na(time[60*24/OnePeriod()]) ? na : HowManyActualBarsAgoWas(60*24)/(60*24/OnePeriod()), color=orange, title="Day Length")
// how many bars ago was 1 week (minutes) 
plot(na(time[60*24*7/OnePeriod()]) ? na : HowManyActualBarsAgoWas(60*24*7)/(60*24*7/OnePeriod()), color=yellow, title="Week Length")

// that's it
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