Indicator Catalog

Built-in indicators ship with the platform. Custom indicators (see Custom Indicators) can be defined inline or published to your organization’s catalog.

The platform seeds 175 indicators in seven families. Every one of them is callable from RaamCode, and every one has a page below.

Identifier vs. label

The Indicator column is the identifier a strategy writes — PriceOscillator(12, 26, on=self.trade). The Chart label column is the human name the chart’s indicator picker shows for the same thing. They are two names for one indicator, and only the identifier is valid in RaamCode source; a label with spaces was never a callable name.

Trend (40)

Direction and the lines that draw it — moving averages, channels, stops, and the trend-strength gauges.

Indicator	Chart label	Output	What it measures
SMA	Simple Moving Average	single decimal	Trend baseline, crossover signals.
EMA	Exponential Moving Average	single decimal	Faster-reacting trend baseline.
WMA	Weighted Moving Average	single decimal	Linearly-weighted trend baseline.
DonchianHigh	Donchian High	single decimal	Breakout level — rolling maximum close.
DonchianLow	Donchian Low	single decimal	Trailing exit level — rolling minimum close.
DonchianMid	Donchian Mid	single decimal	Mean-reversion target — channel midpoint.
Signals	Crossover Signals	single decimal	Fast MA that draws triangles on price/MA crossovers.
TrendIntensity	Trend Intensity	single decimal	Percentage stretch of price from its SMA.
MADeviation	MA Deviation	single decimal	Absolute distance between price and its SMA.
ADX	Average Directional Index	.adx, .di_plus, .di_minus	Wilder’s trend-strength gauge from smoothed directional movement, 0–100 and direction-blind; .di_plus/.di_minus carry the direction.
ALMA	Arnaud Legoux Moving Average	single decimal	Gaussian-weighted average with a tunable offset — shift the weight toward recency for less lag, toward the middle for more smoothness.
AccumulativeSwingIndex	Accumulative Swing Index	single decimal	Wilder’s swing index accumulated bar by bar — a smoothed proxy for the “real” price line behind the noise.
ChandeKrollStop	Chande Kroll Stop	.long, .short	ATR-offset stop levels on both sides, then smoothed by taking the extreme of the last N raw stops.
DEMA	Double EMA	single decimal	2xEMA minus EMA-of-EMA — Mulloy’s lag-reduced exponential average.
DonchianHighTrue	Donchian High (True)	single decimal	Rolling maximum of the true highs over the window — the textbook upper channel line. The seeded DonchianHigh uses closes.
DonchianLowTrue	Donchian Low (True)	single decimal	Rolling minimum of the true lows over the window — the textbook lower channel line. The seeded DonchianLow uses closes.
FiftyTwoWeekHighLow	52 Week High/Low	.high, .low, .position	The long-lookback high and low with where price sits between them, 0 to 1. Default 252 bars is one year of daily data.
GuppyMMA	Guppy Multiple Moving Average	.short_top, .short_bottom, .long_top, .long_bottom, .short_width, .long_width	Six short EMAs (traders) and six long EMAs (investors) as a ribbon — compression and expansion of the two groups is the signal.
HMA	Hull Moving Average	single decimal	Weighted averages combined to cut lag while staying smooth — 2xWMA(n/2) minus WMA(n), WMA-smoothed over sqrt(n).
HammingMovingAverage	Hamming Moving Average	single decimal	Cosine-window weighted average — tapers the window’s edges, so old bars leave the average gently instead of falling off a cliff.
IchimokuCloud	Ichimoku Cloud	.tenkan, .kijun, .span_a, .span_b	Tenkan, Kijun and the two Senkou spans — the full Ichimoku set, computed at the current bar rather than displaced forward.
KAMA	Kaufman Adaptive Moving Average	single decimal	An average that speeds up when the market moves efficiently and slows to a crawl in noise, driven by the efficiency ratio.
LSMA	Least Squares Moving Average	single decimal	The endpoint of the least-squares fit over the window — the regression line’s value at the newest bar.
LinearRegressionCurve	Linear Regression Curve	single decimal	The least-squares fitted value at each bar, drawn as a curve. Numerically identical to LSMA; listed under both names members search for.
LinearRegressionSlope	Linear Regression Slope	single decimal	Slope of the least-squares fit of price over the window — price units per bar. Positive rising, negative falling.
McGinleyDynamic	McGinley Dynamic	single decimal	A self-adjusting average that speeds up in falling markets and hugs price through speed changes — the denominator adapts to the ratio of price to the line.
HighLowMAChannel	High/Low MA Channel	.upper, .mid, .lower	A simple average of the highs and a simple average of the lows, drawn as a band around price.
ParabolicSAR	Parabolic SAR	single decimal	Wilder’s stop-and-reverse — a stop that accelerates toward price each time the move extends, and flips on contact.
FloorPivotPoints	Floor Pivot Points	.pivot, .r1, .r2, .s1, .s2	Classic floor-trader pivot with two supports and two resistances, computed from the previous bar. On a daily session the previous bar is the previous day.
PriceChannel	Price Channel	.upper, .mid, .lower	The N-bar high and low with their midline — the Donchian channel delivered as one three-output indicator.
SMMA	Smoothed Moving Average	single decimal	Wilder’s smoothed average (RMA) — prev + (close — prev) / n, seeded with a simple average. The smoothing inside ATR and RSI.
SuperTrend	SuperTrend	.line, .direction	An ATR band that ratchets one way and flips side when price closes through it. .line is the trailing stop, .direction is +1 or -1.
T3	Tillson T3	single decimal	Six chained EMAs recombined with volume-factor coefficients — smooth like a long average, lag like a short one.
TEMA	Triple EMA	single decimal	3xEMA — 3xEMA-of-EMA + EMA-of-EMA-of-EMA — Mulloy’s further lag-reduced exponential average.
TRIMA	Triangular Moving Average	single decimal	Double-smoothed average — triangular weights peak at the window’s centre, so it is smoother and laggier than an SMA.
TSF	Time Series Forecast	single decimal	The least-squares regression line extended one bar ahead — the fit’s prediction for the next close.
VIDYA	Variable Index Dynamic Average	single decimal	An EMA whose speed is scaled by momentum strength — fast when CMO is stretched, near-frozen when momentum washes out.
VWMA	Volume-Weighted Moving Average	single decimal	Average close weighted by each bar’s volume. Tracks where the traded money actually was, not just where price was.
VortexIndicator	Vortex Indicator	.vi_plus, .vi_minus	Upward and downward swing movement normalised by true range — the crossing of the two lines marks a trend change.
WilliamsAlligator	Williams Alligator	.jaw, .teeth, .lips	Three smoothed averages of the bar midpoint — jaw, teeth and lips. Computed at the current bar rather than displaced forward.

Momentum (33)

Rate of change and the oscillators built on it — how fast price is moving and whether that pace is fading.

Indicator	Chart label	Output	What it measures
RSI	Relative Strength Index	single decimal	Overbought / oversold (mean reversion).
MACD	MACD	.line, .signal, .histogram	Trend momentum (EMA difference).
ROC	Rate of Change	single decimal	Percentage momentum.
Momentum	Momentum	single decimal	Absolute momentum, trend confirmation.
PriceOscillator	Price Oscillator	single decimal	Fast SMA minus slow SMA.
PercentPriceOscillator	Percent Price Oscillator	single decimal	The same gap as a percentage — portable thresholds.
StochasticClose	Stochastic Close	single decimal	Close-only stochastic oscillator, 0–100.
WilliamsClose	Williams Close	single decimal	Williams %R variant on closes, −100–0.
CCI	Commodity Channel Index	single decimal	Overbought / oversold on typical price.
Aroon	Aroon	.up, .down, .oscillator	Trend-strength + direction.
AcceleratorOscillator	Accelerator Oscillator	single decimal	The Awesome Oscillator minus its own simple average — momentum’s acceleration rather than its level.
AwesomeOscillator	Awesome Oscillator	single decimal	Fast minus slow simple average of the bar midpoint (H+L)/2. Positive and rising reads as bullish momentum.
BalanceOfPower	Balance of Power	single decimal	(Close — Open) / (High — Low) — where the close finished relative to the open, scaled by the bar’s range. Optionally smoothed.
CMO	Chande Momentum Oscillator	single decimal	Unsmoothed gains minus losses over the window, scaled -100 to +100. Sharper and noisier than RSI by construction.
ConnorsRSI	Connors RSI	single decimal	The average of three components — a short RSI of price, an RSI of the up/down streak, and the percent rank of the last return.
CoppockCurve	Coppock Curve	single decimal	A weighted average of two long rates of change — built for monthly index bottoms, read as a slow momentum turn.
DPO	Detrended Price Oscillator	single decimal	A past close minus the average centred on it. Removes the trend and leaves the cycle; deliberately not aligned with the current bar.
FisherTransform	Fisher Transform	.fisher, .trigger	Ehlers’ Gaussianised price position — normalises the range position then stretches the tails, so turning points become sharp spikes.
IntradayMomentumIndex	Intraday Momentum Index	single decimal	RSI computed on open-to-close moves instead of close-to-close — candle bodies, aggregated into an oscillator.
KST	Know Sure Thing	.kst, .signal	Pring’s summed momentum — four smoothed rates of change on rising horizons, weighted 1/2/3/4, with a signal line.
UpCloseRatio	Up-Close Ratio	single decimal	The percentage of the last N bars that closed above the bar before. A blunt, robust regime read.
PercentRank	Percent Rank	single decimal	What fraction of the last N values the current one exceeds, 0–100. A distribution-free way to say “unusually high”.
QStick	QStick	single decimal	The average of (close — open) over N bars — whether candles have been closing above or below where they opened.
RateOfChangePercent	Rate of Change Percent	.percent, .ratio, .ratio100	Percentage change over N bars, with the ratio and indexed-ratio variants as extra outputs.
RelativeVigorIndex	Relative Vigor Index	.rvi, .signal	Close-minus-open over high-minus-low, both weighted across four bars and smoothed — does the close finish strong relative to the range?.
SMIErgodic	SMI Ergodic	.ergodic, .signal	The True Strength Index under its other name, with a signal line — Blau’s ergodic oscillator.
Stochastic	Stochastic	.k, .d	%K and %D on the true high-low range — where the close sits in the window’s range, smoothed. The seeded StochasticClose uses closes.
StochasticMomentumIndex	Stochastic Momentum Index	.smi, .signal	Where the close sits relative to the midpoint of the range rather than its low — Blau’s centred stochastic, -100 to +100.
StochasticRSI	Stochastic RSI	.k, .d	The stochastic applied to RSI instead of price — a faster, twitchier oscillator. %K and %D, 0–100.
TRIX	TRIX	single decimal	One-bar rate of change of a triple-smoothed EMA, in basis points. Zero-line crosses are the classic signal.
TSI	True Strength Index	.tsi, .signal	Double-smoothed momentum over double-smoothed absolute momentum, scaled -100 to +100, with a signal line.
UltimateOscillator	Ultimate Oscillator	single decimal	Buying pressure over true range, blended across three lookbacks (7/14/28 weighted 4/2/1). Reads 0–100.
WilliamsR	Williams %R	single decimal	Where the close sits relative to the window’s true high, from 0 (strongest) to -100 (weakest). The seeded WilliamsClose uses closes.

Volatility (26)

How wide the bars are — ranges, bands, and the regime measures built from them.

Indicator	Chart label	Output	What it measures
BollingerBands	Bollinger Bands	.upper, .mid, .lower	Mean reversion, volatility squeeze.
ATR	Average True Range	single decimal	Volatility (true range).
StdDev	Standard Deviation	single decimal	Volatility, custom bands.
VolatilityStdDev	Annualized Volatility	single decimal	Volatility regime filter — stddev of log returns × √252.
PriceChannelWidth	Price Channel Width	single decimal	Channel width in price units (max − min of closes).
NormalizedRange	Normalized Range	single decimal	Channel width as a percentage — comparable across instruments.
ATRPercent	ATR Percent	single decimal	ATR as a percentage of the close — volatility in units comparable across instruments. The input volatility-scaled sizing wants.
BollingerBandwidth	Bollinger Bandwidth	single decimal	Bollinger band width as a fraction of the middle band — the squeeze detector. Low bandwidth means compression.
BollingerPercentB	Bollinger %B	single decimal	Where the close sits inside the Bollinger bands — 0 at the lower band, 1 at the upper, outside that range beyond them.
ChaikinVolatility	Chaikin Volatility	single decimal	The rate of change of a smoothed high-low range — how fast the market’s daily range is expanding or contracting.
ChoppinessIndex	Choppiness Index	single decimal	Range efficiency on a 0–100 log scale — near 100 the market is chopping in place, near 0 it is trending.
Envelopes	Envelopes	.upper, .mid, .lower	Fixed-percentage bands around a simple average. The non-adaptive control every volatility band is judged against.
GarmanKlassVolatility	Garman-Klass Volatility	single decimal	An OHLC volatility estimator — combines the log range with the log open-to-close move for a more efficient read than either alone.
HistoricalVolatility	Historical Volatility	single decimal	Annualised standard deviation of log returns, in percent. Set annualization to bars per year for the session in use.
KeltnerChannels	Keltner Channels	.upper, .mid, .lower	EMA centreline with ATR bands. Smoother than Bollinger and gap-aware; the squeeze setup compares the two.
MassIndex	Mass Index	single decimal	A bulge in the ratio of two smoothed range EMAs — range expansion that often precedes a reversal, regardless of direction.
NATR	Normalized ATR	single decimal	TA-Lib’s normalised average true range — ATR as a percentage of the close, under the name TA-Lib users search for.
ParkinsonVolatility	Parkinson Volatility	single decimal	A range-based volatility estimator — uses the high-low span rather than closes, so it extracts more information per bar.
RangeExpansionIndex	Range Expansion Index	single decimal	Tom DeMark’s REI — how much the recent highs and lows have expanded relative to their own recent movement, -100 to +100.
RelativeVolatilityIndex	Relative Volatility Index	single decimal	RSI computed on standard deviation instead of price — is volatility itself trending up or down?.
StandardError	Standard Error	single decimal	How far price scatters around its own regression line — low means the trend explains the move, high means it does not.
StandardErrorBands	Standard Error Bands	.upper, .mid, .lower	The regression line with bands a multiple of the standard error away — a channel that narrows when the trend is clean.
TR	True Range	single decimal	Max of (high-low), |high-previous close|, |low-previous close|. Wilder’s raw one-bar volatility unit; ATR is its average.
UlcerIndex	Ulcer Index	single decimal	Root-mean-square drawdown from the running high — downside-only volatility, the measure that matches how losses actually feel.
VolatilityCloseToClose	Close-to-Close Volatility	single decimal	The plain close-to-close estimator with a zero-mean assumption — the baseline every other volatility estimator is compared against.
VolatilityCloseToCloseMovingBars	Close-to-Close Volatility (Moving Bars)	single decimal	Close-to-close volatility over only the bars whose close changed, so illiquid flat bars cannot drag the estimate down.

Volume (19)

What traded, not just where — accumulation, flow, and volume-weighted prices.

Indicator	Chart label	Output	What it measures
Volume	Volume	single decimal	Per-bar volume, tinted by candle direction.
AccumulationDistribution	Accumulation/Distribution	single decimal	Cumulative close-location-value times volume — where in the range the bar closed, weighted by how much traded.
ChaikinMoneyFlow	Chaikin Money Flow	single decimal	Close-location value times volume, summed over the window and scaled by total volume. Bounded -1 to +1, no drift.
ChaikinOscillator	Chaikin Oscillator	single decimal	MACD of the accumulation/distribution line — fast minus slow EMA of A/D, so it reads money-flow momentum rather than level.
EaseOfMovement	Ease of Movement	single decimal	How far price moved per unit of volume — high when a small amount of trading moved the market a long way.
ForceIndex	Force Index	single decimal	Price change times volume, smoothed — Elder’s measure of the force behind a move, combining direction, size and participation.
KlingerOscillator	Klinger Oscillator	.kvo, .signal	Volume force signed by the direction of the typical price, smoothed fast and slow — long-term money flow with a signal line.
MarketFacilitationIndex	Market Facilitation Index	single decimal	Bar range per unit of volume — how much price movement each contract bought. Read alongside volume’s own direction.
MoneyFlowIndex	Money Flow Index	single decimal	RSI weighted by volume — typical-price money flow split into positive and negative, scaled 0–100.
NegativeVolumeIndex	Negative Volume Index	single decimal	A cumulative index that only changes on falling-volume bars — the theory being that quiet days are the smart money’s days.
SignedVolume	Signed Volume	single decimal	Volume signed by the bar’s direction: positive on an up close, negative on a down close, optionally summed over a window.
OBV	On-Balance Volume	single decimal	Cumulative volume signed by the close’s direction. The level is meaningless — read the slope and divergences.
PositiveVolumeIndex	Positive Volume Index	single decimal	A cumulative index that only changes on rising-volume bars — the crowd’s index, the mirror of NVI.
PriceVolumeTrend	Price Volume Trend	single decimal	Cumulative percentage price change times volume — OBV’s cousin, weighting each bar’s volume by how far price actually moved.
RelativeVolume	Relative Volume	single decimal	Volume as a multiple of its own N-bar average — 2.0 means twice the usual participation.
RollingVWAP	Rolling VWAP	single decimal	Volume-weighted average of typical price over the last N bars. Not session VWAP — it has no anchor and never resets at the open.
VWAPDeviation	VWAP Deviation	single decimal	Distance from the rolling VWAP in standard deviations — the mean-reversion read on a volume-weighted reference.
VolumeOscillator	Volume Oscillator	single decimal	Fast volume average versus slow, as a percentage of the slow. Positive means activity is picking up.
VolumeROC	Volume Rate of Change	single decimal	Percentage change in volume over N bars — the participation spike that confirms or contradicts a price move.

Statistical (15)

Descriptive statistics on the price series — regressions, moments, and the average prices.

Indicator	Chart label	Output	What it measures
AutoCorrelation	Auto-Correlation	single decimal	Correlation of returns with their own lag — positive means momentum persists, negative means the series mean-reverts bar to bar.
AverageDeviation	Average Deviation	single decimal	Mean absolute deviation from the window’s mean — dispersion that does not square outliers, so a single spike moves it less than stddev.
AveragePrice	Average Price	single decimal	(Open + High + Low + Close) / 4 — the four-point bar average, optionally smoothed by a simple average.
EfficiencyRatio	Efficiency Ratio	single decimal	Net move divided by total path — 1 when price went straight there, near 0 when it wandered. Kaufman’s noise measure.
HurstExponent	Hurst Exponent	single decimal	Rescaled-range estimate of persistence — above 0.5 the series trends, below 0.5 it mean-reverts, 0.5 is a random walk.
Kurtosis	Kurtosis	single decimal	Tail weight of the return distribution — excess kurtosis, where 0 is Gaussian and positive means fatter tails than normal.
LinearRegression	Linear Regression	.fitted, .slope, .r2	Least-squares fit of price on bar index over the window — the fitted endpoint, the slope, and the R-squared fit quality.
LinearRegressionAngle	Linear Regression Angle	single decimal	The regression slope expressed as an angle in degrees — a bounded reading that does not scale with the instrument’s price.
LinearRegressionIntercept	Linear Regression Intercept	single decimal	The fitted value at the window’s first bar — where the regression line starts, the anchor its slope pivots from.
MedianPrice	Median Price	single decimal	(High + Low) / 2 — the bar’s midpoint, optionally smoothed by a simple average. The Awesome Oscillator’s input.
Skewness	Skewness	single decimal	Asymmetry of the return distribution over the window — negative means the left tail is longer, the crash-risk direction.
TypicalPrice	Typical Price	single decimal	(High + Low + Close) / 3, optionally smoothed by a simple average. The price transform CCI, MFI and rolling VWAP build on.
Variance	Variance	single decimal	Rolling variance of the close — the squared dispersion standard deviation is the root of, useful where a squared scale is wanted.
WeightedClose	Weighted Close	single decimal	(High + Low + 2xClose) / 4 — a bar summary that leans toward the close, optionally smoothed by a simple average.
ZScore	Z-Score	single decimal	How many standard deviations the close sits from its rolling mean. The general-purpose mean-reversion primitive.

Regime (8)

One reading that answers “is this market trending or ranging” before a strategy commits to either.

Indicator	Chart label	Output	What it measures
ADXR	ADX Rating	single decimal	The average of today’s ADX and the ADX from N bars ago — a slower, steadier read of trend strength.
ElderRayPower	Elder-Ray Power	.bull, .bear, .power	Elder’s Elder-Ray: how far the high sits above an EMA (bulls) and how far the low sits below it (bears), plus their sum.
ChopZone	Chop Zone	single decimal	A trend-direction zone from the slope angle of a typical-price EMA: -4 (steep down) through 0 (flat) to +4 (steep up).
MarketMeanness	Market Meanness Index	single decimal	How often price crosses back over its own running median — near 75 percent is random, lower means a real trend is present.
TrendQuality	Trend Quality	single decimal	Trend strength divided by the noise around it — the regression slope over the window, scaled by its own standard error.
CorrelationTrend	Correlation Trend (Ehlers)	single decimal	Ehlers’ correlation of price with time over the window, -1 to +1: a direct measure of how steadily price has been moving.
VerticalHorizontalFilter	Vertical Horizontal Filter	single decimal	Net range over total path travelled — high means one directional move, low means the same ground covered many times.
VolatilityRegime	Volatility Regime	single decimal	Current volatility as a percentile of its own long history — 0 means the calmest it has been, 100 the most violent.

Patterns (34)

Single- and multi-bar candlestick and structure events — each returns 1 or −1 on the bar it fires, 0 otherwise.

Indicator	Chart label	Output	What it measures
BeltHold	Belt Hold	single decimal	A long body that opened at its own extreme and never looked back — bullish opens at the low, bearish opens at the high.
DarkCloudCover	Dark Cloud Cover	single decimal	A black bar that opens above the previous white bar’s high and closes back below its midpoint — a rejected gap up. Returns -1.
Doji	Doji	single decimal	A bar whose body is negligible against its range — buyers and sellers finished level. Returns 1 when present, 0 otherwise.
DojiStar	Doji Star	single decimal	A doji that gaps away from the previous long body — the trend ran out of participants overnight. Returns 1 after a black bar, -1 after a white one.
DragonflyDoji	Dragonfly Doji	single decimal	A doji whose open and close sit at the top of the range — a long lower shadow rejected entirely. Bullish, returns 1.
Engulfing	Engulfing	single decimal	A body that completely covers the previous bar’s body and closes the other way — the strongest two-bar reversal. Returns 1 bullish, -1 bearish.
EveningStar	Evening Star	single decimal	A long white bar, a small gapped-up body, then a black bar closing well into the first — a three-bar top. Returns -1.
FractalHigh	Fractal High	single decimal	Williams’ five-bar fractal — a high with two lower highs on each side. Confirmed two bars late by construction.
FractalLow	Fractal Low	single decimal	Williams’ five-bar fractal — a low with two higher lows on each side. Confirmed two bars late by construction.
GapDown	Gap Down	single decimal	An open below the previous bar’s low — the market repriced between sessions. Returns -1.
GapUp	Gap Up	single decimal	An open above the previous bar’s high — the market repriced between sessions. Returns 1.
GravestoneDoji	Gravestone Doji	single decimal	A doji whose open and close sit at the bottom of the range — a long upper shadow rejected entirely. Bearish, returns -1.
Hammer	Hammer	single decimal	A small body at the top of the range with a long lower shadow, after a decline — sellers pushed down and were rejected. Returns 1.
HangingMan	Hanging Man	single decimal	A hammer shape appearing after an advance — the same long lower shadow, read as a warning instead of a bottom. Returns -1.
Harami	Harami	single decimal	A small body contained entirely inside the previous bar’s larger body — the trend paused. Returns 1 after a black bar, -1 after a white one.
HaramiCross	Harami Cross	single decimal	A harami whose inside bar is a doji — the pause is a complete standstill, which makes the signal stronger than a plain harami.
InsideBar	Inside Bar	single decimal	A bar whose entire range sits inside the previous bar’s range — a contraction, and the setup half of most breakout rules. Returns 1.
InvertedHammer	Inverted Hammer	single decimal	A small body at the bottom of the range with a long upper shadow, after a decline — a failed rally that still shows demand. Returns 1.
LongLeggedDoji	Long-Legged Doji	single decimal	A doji with long shadows on both sides — a wide fight that settled exactly where it started. Indecision, returns 1.
Marubozu	Marubozu	single decimal	A bar that is almost all body — it opened at one extreme and closed at the other. Returns 1 for white, -1 for black.
MorningStar	Morning Star	single decimal	A long black bar, a small gapped-down body, then a white bar closing well into the first — a three-bar bottom. Returns 1.
NBarNarrowRange	N-Bar Narrow Range	single decimal	The narrowest range of the last N bars — the NR4 and NR7 compression setups. Returns 1 on the narrow bar.
OutsideBar	Outside Bar	single decimal	A bar whose range contains the previous bar’s entirely — an expansion that took out both sides. Returns 1.
PiercingLine	Piercing Line	single decimal	A white bar that opens below the previous black bar’s low and closes back above its midpoint — a rejected gap down. Returns 1.
PivotHigh	Pivot High	single decimal	A local high with equal numbers of lower highs on each side. Confirmed only after the right-hand bars arrive — it is late, not repainted.
PivotLow	Pivot Low	single decimal	A local low with equal numbers of higher lows on each side. Confirmed only after the right-hand bars arrive — it is late, not repainted.
ShootingStar	Shooting Star	single decimal	A small body at the bottom of the range with a long upper shadow, after an advance — buyers pushed up and were rejected. Returns -1.
SpinningTop	Spinning Top	single decimal	A small body with shadows on both sides — a bar that moved but resolved nothing. Indecision, returns 1.
ThreeBlackCrows	Three Black Crows	single decimal	Three consecutive black bars, each opening inside the last body and closing lower — a steady, broad decline. Returns -1.
ThreeInside	Three Inside Up/Down	single decimal	A harami confirmed by a third bar closing beyond the first body — the pause resolved in the new direction. Returns 1 up, -1 down.
ThreeOutside	Three Outside Up/Down	single decimal	An engulfing bar confirmed by a third bar continuing beyond it — the reversal followed through. Returns 1 up, -1 down.
ThreeWhiteSoldiers	Three White Soldiers	single decimal	Three consecutive white bars, each opening inside the last body and closing higher — a steady, broad advance. Returns 1.
TweezerBottom	Tweezer Bottom	single decimal	Two consecutive bars with matching lows after a decline — the same level defended twice. Returns 1.
TweezerTop	Tweezer Top	single decimal	Two consecutive bars with matching highs after an advance — the same level rejected twice. Returns -1.

How to read each page

Every indicator page has the same shape:

1. Signature — exact constructor with required and optional args.
2. Formula — what it computes, in math.
3. Warmup — how many bars before output is valid, and what it reports until then.
4. Reading the value — single-value vs multi-value access.
5. Example — minimal strategy using it.
6. Notes — edge cases, common bugs.

Declaration convention

All indicators are constructed at the top of execute(). The transpiler hoists them so every bar feeds the indicator — not just bars where a conditional fires.

class DeclarationOrder(Strategy):
    """Indicators first, logic afterwards."""
    fast = Param(7, min=2, max=50)
    slow = Param(21, min=10, max=200)
    trade = Symbol()
    sizing = FixedCapital()

    def execute(self):
        # indicators at the top
        fast = SMA(self.fast, on=self.trade)
        slow = SMA(self.slow, on=self.trade)
        rsi = RSI(14, on=self.trade)

        # logic afterwards
        self.stop_loss(2.0)

        if fast.crossed_above(slow) and rsi.value < 70 and self.trade.is_flat:
            self.buy(self.trade)

        if fast.crossed_below(slow) and self.trade.is_long:
            self.sell(self.trade, self.trade.position)

More on indicator declaration →