1976Mendes

//version=5
indicator(title="Elder Force Index Strategy", shorttitle="EFI", format=format.volume, timeframe="", timeframe_gaps=true)

// Input para o comprimento da EMA
length = input.int(13, title="Length", minval=1)

// Cálculo do Elder Force Index (EFI)
efi = ta.ema(ta.change(close) * volume, length)

// Plot do EFI
plot(efi, color=#F44336, title="Elder Force Index")

// Sinal de Compra (Cruzamento acima de 0)
buySignal = efi > 0 and efi[1] <= 0
// Sinal de Venda (Cruzamento abaixo de 0)
sellSignal = efi < 0 and efi[1] >= 0

// Plot dos sinais de compra e venda no gráfico
plotshape(series=buySignal, title="Buy Signal", color=color.green, style=shape.triangleup, location=location.belowbar, size=size.small)
plotshape(series=sellSignal, title="Sell Signal", color=color.red, style=shape.triangledown, location=location.abovebar, size=size.small)

// Adiciona setas para sinais
bgcolor(buySignal ? color.new(color.green, 95) : na)
bgcolor(sellSignal ? color.new(color.red, 95) : na)