Trend Strength & Volatility

// This Pine Script™ code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © Zettt

//@version=5
indicator("Trend Strength & Volatility", overlay=true)
// import TradingView/ta/7

// EMA lengths
ema1Length = input.int(defval = 21, title = "EMA 1", tooltip = "This EMA is also used for ATR/Keltner.") 
ema2Length = input.int(defval = 55, title = "EMA 2")
ema3Length = input.int(defval = 100, title = "EMA 3")

// Trend Strength
// ##############
// We use MACD as trend strength indicator because it calculates the difference of 2 EMAs
[macdShort, signalShort, histShort] = ta.macd(close[1], ema1Length, ema2Length, 9) // MACD for shorter EMAs
[macdLong, signalLong, histLong] = ta.macd(close[1], ema2Length, ema3Length, 9) // MACD for longer EMAs

// Volatility
// ##########
lookbackLength = input.int(title='Lookback Length', defval=365, minval=1)
stdevMultiplier = input.float(title='Standard Deviation Multiplier', defval=1, minval=0, step=0.1)

averageReturn = ta.roc(close, lookbackLength)
risk = ta.stdev(averageReturn, lookbackLength)

// Sharpe
// ######
// Sharpe can function as indication for trend strength
// lookbackLength = input.int(title='Lookback Length', defval=20, minval=1)
// stdevMultiplier = input.float(title='Standard Deviation Multipliert', defval=2, minval=1, step=0.1)

// averageReturn = ta.roc(close, lookbackLength)

stdev = ta.stdev(averageReturn, lookbackLength)
sharpe = (averageReturn / stdev)

// ATR/Keltner 
// ###########
// Measures distance to price, and displays in percent
[kcMiddleShort, kcUpperShort, kcLowerShort] = ta.kc(close, ema1Length, 2)
atrShort = 0.0
if macdShort >= 0
    atrShort := 100 - ((kcLowerShort/close[1]) * 100)
else if macdShort < 0
    atrShort := 100 - ((kcUpperShort/close[1]) * 100)

// A second ATR value is necessary if trend is different for
// long and short EMAs
[kcMiddleLong, kcUpperLong, kcLowerLong] = ta.kc(close, ema1Length, 2)
atrLong = 0.0
if macdLong >= 0
    atrLong := 100 - ((kcLowerLong/close[1]) * 100)
else if macdLong < 0
    atrLong := 100 - ((kcUpperLong/close[1]) * 100)



// Create a table with two columns and three rows
t = table.new(position.bottom_left, 6, 2, bgcolor=color.new(color.white, 10))

// Update table cells
// Table Header
table.cell(t, 0, 0, text="Short") // Trend strength short
table.cell(t, 1, 0, text="Long") // Trend strength short
table.cell(t, 2, 0, text="Sharpe") // Trend strength short
// table.cell(t, 3, 0, text="HV") // Historical volatility = realized vol = annualized vol
table.cell(t, 3, 0, text="ATR S") // ATR distance in percent
table.cell(t, 4, 0, text="ATR L") // ATR distance in percent

// Column 0
table.cell(t, 0, 1, text=str.tostring(macdShort, "#.##"))

// Column 1
table.cell(t, 1, 1, text=str.tostring(macdLong, "#.##"))
// Column 2
table.cell(t, 2, 1, text=str.tostring(sharpe, "#.##"))
// Column 3
// table.cell(t, 3, 1, text=str.tostring(risk, "#.##"))
// Column 4
table.cell(t, 3, 1, text=str.tostring(atrShort, "#.##"))
// Column 5
table.cell(t, 4, 1, text=str.tostring(atrLong, "#.##"))