Technical Analysis (ta)

All technical analysis functions live in the ta namespace. Functions that accept a source parameter work with any Series (close, open, high, low, volume, or a computed Series). Functions without a source parameter use OHLCV internally.

Moving Averages

Function	Description
ta.sma(source, period)	Simple Moving Average
ta.ema(source, period)	Exponential Moving Average
ta.wma(source, period)	Weighted Moving Average
ta.dema(source, period)	Double Exponential Moving Average
ta.tema(source, period)	Triple Exponential Moving Average
ta.hma(source, period)	Hull Moving Average
ta.vwma(source, period)	Volume Weighted Moving Average

All return Series. Parameters:

• source Series — input data (e.g. close, high, ta.sma(close, 10))
• period number — lookback length

const sma20 = ta.sma(close, 20)
const emaHigh = ta.ema(high, 10)
const hull = ta.hma(close, 9)

Oscillators

Function	Description
ta.rsi(source, period)	Relative Strength Index (0–100)
ta.roc(source, period)	Rate of Change (%)
ta.momentum(source, period)	Momentum (price difference)
ta.cci(period)	Commodity Channel Index
ta.mfi(period)	Money Flow Index (0–100)

rsi, roc, and momentum accept a custom source. cci and mfi use OHLCV internally.

const rsi = ta.rsi(close, 14)
const cci = ta.cci(20)

Multi-Output Functions

These return an object with multiple named Series:

ta.bollinger(source, period, mult)

Returns { middle: Series, upper: Series, lower: Series }

const bb = ta.bollinger(close, 20, 2)
plot(bb.middle, 'Middle', '#2962ff')
plot(bb.upper, 'Upper', '#f44336')
plot(bb.lower, 'Lower', '#4caf50')
fill(bb.upper, bb.lower, 'rgba(33,150,243,0.1)')

ta.macd(source, fastPeriod, slowPeriod, signalPeriod)

Returns { macd: Series, signal: Series, histogram: Series }

const m = ta.macd(close, 12, 26, 9)
plot(m.macd, 'MACD', '#2962ff')
plot(m.signal, 'Signal', '#ff6d00')

ta.stochastic(kPeriod, dPeriod, smooth)

Returns { k: Series, d: Series }

Uses OHLCV data internally (no source parameter).

const stoch = ta.stochastic(14, 3, 3)
plot(stoch.k, '%K', '#2962ff')
plot(stoch.d, '%D', '#ff6d00')

ta.adx(diLength, adxSmoothing)

Returns { adx: Series, plusDI: Series, minusDI: Series }

const { adx, plusDI, minusDI } = ta.adx(14, 14)
plot(adx, 'ADX', '#7E57C2')
plot(plusDI, '+DI', '#26A69A')
plot(minusDI, '-DI', '#EF5350')

Volume Indicators

Function	Description
ta.obv()	On-Balance Volume
ta.cmf(period)	Chaikin Money Flow

These use OHLCV internally — no source parameter.

const obv = ta.obv()
plot(obv, 'OBV', '#2962ff')

Volatility

Function	Description
ta.atr(period)	Average True Range

Uses OHLCV internally.

const atr = ta.atr(14)

Pivot Detection

Function	Returns	Description
ta.pivotHigh(source, leftBars, rightBars)	Series	Pivot high price at detection bar, NaN elsewhere
ta.pivotLow(source, leftBars, rightBars)	Series	Pivot low price at detection bar, NaN elsewhere

Detects swing highs/lows using left and right bar confirmation. Handles forward-filled multi-timeframe data by de-duplicating runs of equal values before detection.

• source Series — input data (e.g. high, low, or MTF series)
• leftBars number — bars to the left that must be lower (high) or higher (low)
• rightBars number — bars to the right that must be lower (high) or higher (low)

The pivot price is placed at the bar where rightBars confirmation completes (i.e. with a delay of rightBars).

// Detect 5m swing highs/lows on a 15s chart
const tf5 = request.timeframe('5m')
const pivHigh = ta.pivotHigh(tf5.high, 5, 5)
const pivLow = ta.pivotLow(tf5.low, 5, 5)
plot(pivHigh, 'Pivot High', '#EF5350')
plot(pivLow, 'Pivot Low', '#26A69A')

// RSI pivots for divergence detection
const rsi = ta.rsi(close, 14)
const rsiPivH = ta.pivotHigh(rsi, 3, 3)
const rsiPivL = ta.pivotLow(rsi, 3, 3)

Utilities

Function	Returns	Description
ta.crossover(a, b)	boolean	True when a crosses above b on the current bar
ta.crossunder(a, b)	boolean	True when a crosses below b on the current bar
ta.highest(source, period)	Series	Highest value over the last period bars
ta.lowest(source, period)	Series	Lowest value over the last period bars
ta.change(source, length?)	Series	Change in value over length bars (default: 1)

const fast = ta.ema(close, 9)
const slow = ta.ema(close, 21)

if (ta.crossover(fast, slow))  strategy.entry('Long', 'long')
if (ta.crossunder(fast, slow)) strategy.close('Long')

const highestHigh = ta.highest(high, 20)
const momentum = ta.change(close, 5)