Convert trend intensity index

[cherif]

this is a code i copied form tradingview. is it possible to translate it to a thinkorswim code?

//@version=3

study(title="Trend Intensity Index [DW]", shorttitle="TII [DW]", overlay=false)

//by Donovan Wall



//This study is a simple variation of M. H. Pee's Trend Intensity Index that includes two signal lines rather than one for additional trend confirmation.



//-----------------------------------------------------------------------------------------------------------------------------------------------------------------

//Inputs

//-----------------------------------------------------------------------------------------------------------------------------------------------------------------



//Source

src   = input(defval=close, title="Source")

per   = input(defval=34,    title="TII Period")

eper  = input(defval=5,     title="Signal 1 Period")

eper2 = input(defval=21,    title="Signal 2 Period")



//-----------------------------------------------------------------------------------------------------------------------------------------------------------------

//Definitions

//-----------------------------------------------------------------------------------------------------------------------------------------------------------------



//Average Price

av = sma(src, per)



//Half Period

per2 = (per % 2 == 0) ? per/2 : (per + 1)/2



//Deviations

dev   = src - av

udev  = dev > 0 ? abs(dev) : 0

ddev  = dev < 0 ? abs(dev) : 0

sudev = sum(udev, per2)

sddev = sum(ddev, per2)



//Trend Intensity Index

tii  = (100*sudev)/(sudev + sddev)

sig  = ema(tii, eper)

sig2 = ema(tii, eper2)



//Bounds

hb   = 100

ub   = 80

cent = 50

db   = 20

lb   = 0



//Color

ticolor = tii > 80 ? lime : tii < 20 ? red : black



//-----------------------------------------------------------------------------------------------------------------------------------------------------------------

//Plots

//-----------------------------------------------------------------------------------------------------------------------------------------------------------------



//Axis

hbplot   = plot(hb, color=lime,     title="Ceiling")

ubplot   = plot(ub, color=lime,     title="Strong Uptrend Threshold")

centplot = plot(cent, color=orange, title="Midline")

dbplot   = plot(db, color=red,      title="Strond Downtrend Threshold")

lbplot   = plot(lb, color=red,      title="Floor")



//Axis Fills

fill(hbplot, ubplot, color=green,  transp=80, title="Strong Uptrend Zone")

fill(dbplot, lbplot, color=maroon, transp=80, title="Strong Downtrend Zone")



//TII Plots

tiiplot  = plot(tii,  color=black,  style=linebr, linewidth=2, title="Trend Intensity Index")

sigplot  = plot(sig,  color=yellow, style=linebr, linewidth=2, title="Signal Line 1")

sig2plot = plot(sig2, color=orange, style=linebr, linewidth=2, title="Signal Line 2")



//TII Fill

fill(tiiplot, centplot, color=ticolor, transp=80)

 

[horserider]

Just put this together. No idea if it is correct. From original TTI formula. You can try it. Others are welcome to modify or correct.

# TTI put together from original TTI formula by Horserider . 9/12/2019

declare lower;

def length =60;
def halflength = 30;
 def sma = average(Close, length);

def Dev = Close - SMA;
def posdev = dev > 0;
def negdev =dev < 0;

def SDpos = sum(posDev, halflength);
def SDneg = sum(negDev, halflength);

def TII = 100 * (SDpos) / (SDpos + SDneg);

def signalline = expAverage(TII, halflength);

plot TTIline = TII;
plot sl = signalline;