Moving Averages

sma(source: TimeSeries, period?: number = 12, priceIndex?: number = 1): number

//@version=2

define(title="SMA Indicator", position="onchart", axis=false);

timeseries trade = ohlcv(symbol=currentSymbol, exchange=currentExchange);
var data = sma(source=trade.close, period=20);

plotLine(value=data, width=2, colors=["green"], label=["SMA 20"], desc=["20-period Simple Moving Average"]);

ema(source: TimeSeries, period?: number = 12, priceIndex?: number = 1): number

//@version=2

define(title="EMA Indicator", position="onchart", axis=false);

timeseries trade = ohlcv(symbol=currentSymbol, exchange=currentExchange);
var data = ema(source=trade.close, period=20);

plotLine(value=data, width=2, colors=["orange"], label=["EMA 20"], desc=["20-period Exponential Moving Average"]);

rma(source: TimeSeries, period?: number = 12, priceIndex?: number = 1): number

//@version=2

define(title="RMA Indicator", position="onchart", axis=false);

timeseries trade = ohlcv(symbol=currentSymbol, exchange=currentExchange);
var data = rma(source=trade.close, period=20);

plotLine(value=data, width=2, colors=["blue"], label=["RMA 20"], desc=["20-period Running Moving Average"]);

//@version=2

define(title="Multi-MA Strategy", position="onchart", axis=false, customTitle="($fastPeriod, $slowPeriod)");

var fastPeriod = input(name="fastPeriod", type="number", defaultValue=10, label="Fast Period");
var slowPeriod = input(name="slowPeriod", type="number", defaultValue=20, label="Slow Period");

timeseries ohlcvData = ohlcv(symbol=currentSymbol, exchange=currentExchange);

// Calculate EMAs
var fastEMA = ema(source=ohlcvData.close, period=fastPeriod);
var slowEMA = ema(source=ohlcvData.close, period=slowPeriod);

// Detect crossover
var bullish = fastEMA > slowEMA;
var colorIndex = bullish ? 0 : 1;

// Plot
plotLine(value=fastEMA, width=2, colors=["green", "red"], colorIndex=colorIndex, label=["Fast EMA"], desc=["Fast Exponential Moving Average"]);
plotLine(value=slowEMA, width=2, colors=["gray"], label=["Slow EMA"], desc=["Slow Exponential Moving Average"]);