Scalping - 8/13/21 EMA with Volume

//version=5
// Indicator: Scalping Trend Reversal with 8/13/21 EMA and Volume
indicator("Scalping - 8/13/21 EMA with Volume", overlay=true)

// Define EMAs
ema8 = ta.ema(close, 8)
ema13 = ta.ema(close, 13)
ema21 = ta.ema(close, 21)

// Plot EMAs
plot(ema8, color=color.yellow, title="EMA 8", linewidth=2)
plot(ema13, color=color.blue, title="EMA 13", linewidth=2)
plot(ema21, color=color.red, title="EMA 21", linewidth=2)

// Volume Moving Average (short-term, e.g., 10-period)
volMA = ta.sma(volume, 10)

// Define Volume Surge (volume > 1.5x its 10-period average)
volSurge = volume > volMA * 1.5

// Bullish Reversal: EMA 8 crosses above EMA 13, price above EMA 21, with volume surge
bullishReversal = ta.crossover(ema8, ema13) and close > ema21 and volSurge

// Bearish Reversal: EMA 8 crosses below EMA 13, price below EMA 21, with volume surge
bearishReversal = ta.crossunder(ema8, ema13) and close < ema21 and volSurge

// Plot Signals
plotshape(bullishReversal, title="Bullish Entry", location=location.belowbar, color=color.green, style=shape.triangleup, size=size.tiny)
plotshape(bearishReversal, title="Bearish Entry", location=location.abovebar, color=color.red, style=shape.triangledown, size=size.tiny)

// Optional: Highlight Volume Surge (non-overlay) - Comment out if not needed
// plot(volume, color=color.gray, title="Volume", style=plot.style_histogram)