Polynomial Regression + RSI Explosive Zones

// Sonic R
EMA_len = input.int(89, title="EMA Signal Length")
HiLoLen = input.int(34, title="PAC EMA Length")

// Polynomial Regression
regression_length = input.int(10, title="Regression Length")
fractal_size = input.int(2, title="Fractal Size")

// Color inputs for regression
colorMid = input.color(color.red, title="Mid Line Color")
colorMax = input.color(color.orange, title="Max Line Color")
colorMin = input.color(color.green, title="Min Line Color")
colorUpper = input.color(color.blue, title="Upper Line Color")
colorLower = input.color(color.purple, title="Lower Line Color")

// === SONIC R ===
// PAC lines
pacC = ta.ema(close, HiLoLen)
pacL = ta.ema(low, HiLoLen)
pacH = ta.ema(high, HiLoLen)

plot(pacL, title="PAC Low EMA", color=color.new(color.blue, 50))
plot(pacH, title="PAC High EMA", color=color.new(color.blue, 50))
plot(pacC, title="PAC Close EMA", color=color.new(color.blue, 0), linewidth=2)
fill(plot(pacL), plot(pacH), color=color.aqua, transp=90, title="Fill PAC")

// EMA lines
ema610 = ta.ema(close, 610)
ema200 = ta.ema(close, 200)
emaSignal = ta.ema(close, EMA_len)

plot(ema610, title="EMA 610", color=color.white)
plot(ema200, title="EMA 200", color=color.fuchsia)
plot(emaSignal, title="EMA Signal", color=color.orange, linewidth=2)