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fractalUp(pattern) =>

p = high[pattern+1]

okl = 1

okr = 1

for i = pattern to 1

okl := iff(high[i] < high[i+1] and okl == 1 , 1, 0)

for i = pattern+2 to pattern*2+1

okr := iff(high[i] < high[i-1] and okr == 1, 1, 0)

res = iff(okl == 1 and okr == 1, p, res[1])

res

fractalDn(pattern) =>

p = low[pattern+1]

okl = 1

okr = 1

for i = pattern to 1

okl := iff(low[i] > low[i+1] and okl == 1 , 1, 0)

for i = pattern+2 to pattern*2+1

okr := iff(low[i] > low[i-1] and okr == 1, 1, 0)

res = iff(okl == 1 and okr == 1, p, res[1])

res

study(title="Fractal Chaos Bands", overlay = true)

Pattern = input(1, minval=1)

xUpper = fractalUp(Pattern)

xLower = fractalDn(Pattern)

plot(xUpper, color=red, title="FCBUp")

plot(xLower, color=green, title="FCBDn")