AIActivationFunctionsBipolarSigmoid is a Pine Script library that provides mathematical implementations of the bipolar sigmoid activation function and its derivatives for machine learning algorithms. It calculates bipolar sigmoid values bounded between -1 and
Library · Pine Script v5 · Library
CandleAnalysis
CandleAnalysis is a Pine Script library providing exportable helper functions for detailed candlestick analysis in custom scripts.
GitHub stars1on the repository
Pine versionv5runs as is
Lines of code113
Settings0inputs
LicenceNone statedfile: MPL-2.0
Last update1 year ago9 Jul 2025
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Source Code
113 lines of Pine Script v5 from CandleAnalysis/candle_analysis.pinescript, published under MPL-2.0 (file header). Keep the author's credit and licence lines when you reuse it.
// This Pine Script™ code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © MarcosACH
// Created by Marcos Achaval
// Last updated: July 13, 2024
//@version=5
// @description A collection of frequently used candle analysis functions in my scripts.
library("CandleAnalysis")
import MarcosACH/MarketAnalysis/1 as MktA
// @function Checks if a specific bar is bullish.
// @param barsBack (int) The number of bars to look back. The default is 0 (current bar).
// @returns True if the bar is bullish, otherwise returns false.
export isBullish(int barsBack = 0) =>
close[barsBack] > open[barsBack]
// @function Checks if a specific bar is bearish.
// @param barsBack (int) The number of bars to look back. The default is 0 (current bar).
// @returns True if the bar is bearish, otherwise returns false.
export isBearish(int barsBack = 0) =>
close[barsBack] < open[barsBack]
// @function Checks if a specific bar is break even.
// @param barsBack (int) The number of bars to look back. The default is 0 (current bar).
// @returns True if the bar is break even, otherwise returns false.
export isBE(int barsBack = 0) =>
close[barsBack] == open[barsBack]
// @function Calculates a specific candle's body size.
// @param barsBack (int) The number of bars to look back. The default is 0 (current bar).
// @param inPriceChg (bool) True to return the body size as a price change value. The default is false (in points).
// @returns The candle's body size in points.
export getBodySize(int barsBack = 0, bool inPriceChg = false) =>
if inPriceChg
math.abs(close[barsBack] - open[barsBack])
else
math.abs(close[barsBack] - open[barsBack]) / syminfo.mintick
// @function Calculates a specific candle's top wick size.
// @param barsBack (int) The number of bars to look back. The default is 0 (current bar).
// @param inPriceChg (bool) True to return the wick size as a price change value. The default is false (in points).
// @returns The candle's top wick size in points.
export getTopWickSize(int barsBack = 0, bool inPriceChg = false) =>
if inPriceChg
math.abs(high[barsBack] - (isBullish(barsBack) or isBE(barsBack) ? close[barsBack] : open[barsBack]))
else
math.abs(high[barsBack] - (isBullish(barsBack) or isBE(barsBack) ? close[barsBack] : open[barsBack])) / syminfo.mintick
// @function Calculates a specific candle's bottom wick size.
// @param barsBack (int) The number of bars to look back. The default is 0 (current bar).
// @param inPriceChg (bool) True to return the wick size as a price change value. The default is false (in points).
// @returns The candle's bottom wick size in points.
export getBottomWickSize(int barsBack = 0, bool inPriceChg = false) =>
if inPriceChg
math.abs((isBearish(barsBack) ? close[barsBack] : open[barsBack]) - low[barsBack])
else
math.abs((isBearish(barsBack) ? close[barsBack] : open[barsBack]) - low[barsBack]) / syminfo.mintick
// @function Calculates a specific candle's body size as a percentage of its entire size including its wicks.
// @param barsBack (int) The number of bars to look back. The default is 0 (current bar).
// @returns The candle's body size percentage.
export getBodyPercent(int barsBack = 0) =>
math.abs(open[barsBack] - close[barsBack]) / math.abs(high[barsBack] - low[barsBack]) * 100
// @function Checks if a specific bar is a hammer candle based on a given fibonacci level.
// @param fib (float) The fibonacci level to base candle's body on. The default is 0.382.
// @param bullish (bool) True if the candle must to be green. The default is false.
// @param barsBack (int) The number of bars to look back. The default is 0 (current bar).
// @returns True if the bar matches the requirements of a hammer candle, otherwise returns false.
export isHammer(float fib = 0.382, bool bullish = false, int barsBack = 0) =>
bullFib = MktA.bullFibRet(low[barsBack], high[barsBack], fib)
bodyLow = isBullish(barsBack) or isBE(barsBack) ? open[barsBack] : close[barsBack]
bodyLow >= bullFib and (not bullish or isBullish(barsBack) or isBE(barsBack))
// @function Checks if a specific bar is a shooting star candle based on a given fibonacci level.
// @param fib (float) The fibonacci level to base candle's body on. The default is 0.382.
// @param bearish (bool) True if the candle must to be red. The default is false.
// @param barsBack (int) The number of bars to look back. The default is 0 (current bar).
// @returns True if the bar matches the requirements of a shooting star candle, otherwise returns false.
export isShootingStar(float fib = 0.382, bool bearish = false, int barsBack = 0) =>
bearFib = MktA.bearFibRet(low[barsBack], high[barsBack], fib)
bodyHigh = isBullish(barsBack) or isBE(barsBack) ? close[barsBack] : open[barsBack]
bodyHigh <= bearFib and (not bearish or isBearish(barsBack))
// @function Checks if a specific bar is a doji candle based on a given wick and body size.
// @param wickSize (float) The maximum top wick size compared to the bottom and vice versa. The default is 1.5.
// @param bodySize (bool) The maximum body size as a percentage compared to the entire candle size. The default is 5.
// @param barsBack (int) The number of bars to look back. The default is 0 (current bar).
// @returns True if the bar matches the requirements of a doji candle.
export isDoji(float wickSize = 1.5, float bodySize = 5, int barsBack = 0) =>
getTopWickSize(barsBack) <= getBottomWickSize(barsBack) * wickSize and getBottomWickSize(barsBack) <= getTopWickSize(barsBack) * wickSize and getBodyPercent(barsBack) <= bodySize
// @function Checks if a specific bar is a bullish engulfing candle.
// @param gapTolernace (int) The maximum offset between the close of the engulfed candle and the open of the engulfing candle. This is a percentage of the engulfed candle. The default is 0.
// @param rejectionWickSize (int) The maximum top wick size compared to the body as a percentage. The default is 10.
// @param engulfWick (bool) True if the engulfed candle's wick requires to be engulfed as well. The default is false.
// @param barsBack (int) The number of bars to look back. The default is 0 (current bar).
// @returns True if the bar matches the requirements of a bullish engulfing candle.
export isBullishEC(int gapTolerance = 0, int rejectionWickSize = 10, bool engulfWick = false, int barsBack = 0) =>
(isBearish(barsBack + 1) or isBE(barsBack + 1) and close[barsBack] > open[barsBack + 1] and open[barsBack] <= close[barsBack + 1] + gapTolerance) and
(not engulfWick or close[barsBack] >= high[barsBack + 1]) and
(getTopWickSize() / getBodySize() * 100 < rejectionWickSize)
// @function Checks if a specific bar is a bearish engulfing candle.
// @param gapTolernace (int) The maximum offset between the close of the engulfed candle and the open of the engulfing candle. This is a percentage of the engulfed candle. The default is 0.
// @param rejectionWickSize (int) The maximum bottom wick size compared to the body as a percentage. The default is 10.
// @param engulfWick (bool) True if the engulfed candle's wick requires to be engulfed as well. The default is false.
// @param barsBack (int) The number of bars to look back. The default is 0 (current bar).
// @returns True if the bar matches the requirements of a bearish engulfing candle.
export isBearishEC(int gapTolerance = 0, int rejectionWickSize = 10, bool engulfWick = false, int barsBack = 0) =>
(isBullish(barsBack + 1) or isBE(barsBack + 1) and close[barsBack] < open[barsBack + 1] and open[barsBack] >= close[barsBack + 1] - gapTolerance) and
(not engulfWick or close[barsBack] <= low[barsBack + 1]) and
(getBottomWickSize() / getBodySize() * 100 < rejectionWickSize)
Overview
CandleAnalysis evaluates whether a specified bar is bullish, bearish, or break-even, and computes metrics including body size, top wick size, and bottom wick size in either tick units or absolute price change. Additionally, the library calculates the candle body percentage relative to its total high-low range and provides pattern recognition checks, such as identifying hammer candlestick formations.
- Candlestick directional status detection
- Body and wick measurement in ticks or price
- Candle body percentage calculation
- Candlestick pattern recognition functions
Details
Published by
MarcosACH on GitHub
Type
Library, Pine Script v5
Draws
Library (no plots)
Category
Candlestick patterns
Markets
Any symbol
Timeframes
Any timeframe
Risk Notes
No repainting, lookahead or stacked entries were found in its code or README. That says nothing about how well it works: test it first.
Topics
librariespinescripttradingvewtradingviewpinescript-libraries
Third-party code. ForexR did not write, test or endorse this script, and the summary above was generated automatically from its code and README. Indicators describe the past, and a strategy's backtest can look better than live trading, especially when a script repaints. Check it in the Strategy Tester and on a demo account before you rely on it.
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