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# ADX and DI with SMA

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The objective of this indicator is to provide a tool to asses if the price is trending ( ADX above SMA ) or range bound ( ADX below SMA ), to decide the type of strategy to apply.

Should be used at a larger time frame than the intended operation time frame.
```study("ADX and DI with SMA")
len = input(title="Length", type=integer, defval=14)
th = input(title="threshold", type=integer, defval=20)
avg = input(title="SMA", type=integer, defval=10)

TrueRange = max(max(high-low, abs(high-nz(close[1]))), abs(low-nz(close[1])))
DirectionalMovementPlus = high-nz(high[1]) > nz(low[1])-low ? max(high-nz(high[1]), 0): 0
DirectionalMovementMinus = nz(low[1])-low > high-nz(high[1]) ? max(nz(low[1])-low, 0): 0

SmoothedTrueRange = nz(SmoothedTrueRange[1]) - (nz(SmoothedTrueRange[1])/len) + TrueRange
SmoothedDirectionalMovementPlus = nz(SmoothedDirectionalMovementPlus[1]) - (nz(SmoothedDirectionalMovementPlus[1])/len) + DirectionalMovementPlus
SmoothedDirectionalMovementMinus = nz(SmoothedDirectionalMovementMinus[1]) - (nz(SmoothedDirectionalMovementMinus[1])/len) + DirectionalMovementMinus

DIPlus = SmoothedDirectionalMovementPlus / SmoothedTrueRange * 100
DIMinus = SmoothedDirectionalMovementMinus / SmoothedTrueRange * 100
DX = abs(DIPlus-DIMinus) / (DIPlus+DIMinus)*100

plot(DIPlus, color=green, title="DI+")
plot(DIMinus, color=red, title="DI-")
plot(SMA, color=white, title="SMA")
hline(th, color=black, linestyle=dashed)```
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