المتوسط المتحرك البسيط (SMA)

//@version=6
indicator("Simple Moving Average (SMA)", overlay=true)
sma20  = ta.sma(close, 20)
sma50  = ta.sma(close, 50)
sma200 = ta.sma(close, 200)
bullish = ta.crossover(sma20, sma50)
bearish = ta.crossunder(sma20, sma50)
plotshape(bullish, style=shape.triangleup,   location=location.belowbar, color=color.green, size=size.small)
plotshape(bearish, style=shape.triangledown, location=location.abovebar, color=color.red,   size=size.small)
plot(sma20,  "SMA 20",  color=color.aqua)
plot(sma50,  "SMA 50",  color=color.orange)
plot(sma200, "SMA 200", color=color.red, linewidth=2)

input fastLength = 20;
input slowLength = 50;
def fastSMA = Average(close, fastLength);
def slowSMA = Average(close, slowLength);
def buySignal = fastSMA crosses above slowSMA;
def sellSignal = fastSMA crosses below slowSMA;
AddOrder(OrderType.BUY_AUTO, buySignal, close, 1, Color.GREEN, Color.GREEN, "SMA Buy");
AddOrder(OrderType.SELL_AUTO, sellSignal, close, 1, Color.RED, Color.RED, "SMA Exit");
plot FastLine = fastSMA;
FastLine.SetDefaultColor(Color.CYAN);
plot SlowLine = slowSMA;
SlowLine.SetDefaultColor(Color.ORANGE);