#### borntostun

##### New member

**Lifetime**

Hi all.

So the latest S&C includes an intriguing, new indicator from John Ehlers -- the Trendflex. Code is provided in Trader's Tips, but I've also located a modified version over on Tradingview that has some options and tricks that are attractive.

https://www.tradingview.com/script/8ZSALctc-TrendFlex-Oscillator-Dr-John-Ehlers/

I'm curious if anyone could assist in translating the pinescript to thinkscript? Thanks all!

So the latest S&C includes an intriguing, new indicator from John Ehlers -- the Trendflex. Code is provided in Trader's Tips, but I've also located a modified version over on Tradingview that has some options and tricks that are attractive.

https://www.tradingview.com/script/8ZSALctc-TrendFlex-Oscillator-Dr-John-Ehlers/

I'm curious if anyone could assist in translating the pinescript to thinkscript? Thanks all!

Code:

```
//@version=4
study("TrendFlex Oscillator - Dr. John Ehlers", "TFO", false, format.price, 2)
bgcolor(color.new(#000000,15), title="Dark Background")
trendflex(Series, PeriodSS, PeriodTrendFlex, PeriodEMA) =>
var SQRT2xPI = sqrt(8.0) * asin(1.0) // 4.44288293815 Constant
alpha = SQRT2xPI / PeriodSS
beta = exp(-alpha)
gamma = -beta * beta
delta = 2.0 * beta * cos(alpha)
float superSmooth = na, superSmooth := (1.0 - delta - gamma) * (Series + nz(Series[1])) * 0.5 + delta * nz(superSmooth[1]) + gamma * nz(superSmooth[2])
E = 0.0
for i=1 to PeriodTrendFlex
E := E + superSmooth - nz(superSmooth)
epsilon = E / PeriodTrendFlex
zeta = 2.0 / (PeriodEMA + 1.0)
float EMA = na, EMA := zeta * epsilon * epsilon + (1.0 - zeta) * nz(EMA[1])
return = EMA==0.0 ? 0.0 : epsilon / sqrt(EMA)
source = input( close, "Source", input.source)
periodTrendFlex = input( 20, "TrendFlex Period", input.integer, minval=2)
useSuperSmootherOveride = input( false, "Apply SuperSmoother Override Below*", input.bool)
periodSuperSmoother = input( 8.0, "SuperSmoother Period*", input.float , minval=4.0, step=0.5)
postSmooth = input( 33.0, "Post Smooth Period**", input.float , minval=1.0, step=0.5)
lineThickness = input( 2, "---- Line Thickness ----", input.integer, options=[1,2,3])
showArea = input("Show", "Display Area", input.string , options=["Show","Hide"])
upperLevel = input( 1.0, "Upper Level", input.float , minval= 0.1, maxval= 2.0, step=0.1)
lowerLevel = input( -1.0, "Lower Level", input.float , minval=-2.0, maxval=-0.1, step=0.1)
var HIDE_AREA = not (showArea=="Show")
if(not useSuperSmootherOveride)
periodSuperSmoother := periodTrendFlex * 0.5
trendFlexOscillator = trendflex(source, periodSuperSmoother, periodTrendFlex, postSmooth)
plot( 0.0, color=#FFFFFF22, linewidth=7 , editable=false)
hline( 0.0, color=#FFFFFFff, title= "Zero", editable=false)
hline(upperLevel, color=#FF0000ff, title="Upper Threshold")
hline(lowerLevel, color=#00FF00ff, title="Lower Threshold")
plot(HIDE_AREA ? na : trendFlexOscillator, color=#AA00FF , transp=80, style=plot.style_area, title="TrendFlex Area")
plot( trendFlexOscillator, color=#AA00FFff, linewidth=lineThickness , title="TrendFlex")
```

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