Separating Lines (CDLSEPARATINGLINES)

Summary

A two-candle continuation pattern: the second candle opposes the first in color, opens at the same price as the first, and is a long-bodied belt hold. Bullish (white second candle) or bearish (black second candle) continuation signal.

Chart

Reference data (CSV) · Chart (SVG)

Chart metadata i

Outputs

• outInteger: pattern_bull_bear · zero · positive · negative

Formula

Two consecutive candles i-1, i: (1) opposite colors: color(i-1) == -color(i); (2) same open: open[i-1]-Equal_avg <= open[i] <= open[i-1]+Equal_avg; (3) long body: realbody(i) > BodyLong_avg; (4) belt hold: if i is white, lowershadow(i) < ShadowVeryShort_avg; if i is black, uppershadow(i) < ShadowVeryShort_avg.

Notes

• A prior trend is not verified, nor that the pattern aligns with it.
• Rare in Bulkowski's tests: he ranks the bullish form 76th and the bearish 82nd of 103 patterns by how often they occur (bullish, bearish). It fires more often in crypto: 120 times in about 16,000 daily bars.

Inputs

• inOpen — Open price of each bar
• inHigh — High price of each bar
• inLow — Low price of each bar
• inClose — Close price of each bar

Outputs

• outInteger — +100 for a bullish (white second candle) hit, -100 for a bearish (black second candle) hit, 0 otherwise

Output Values

What candlestick values mean: Candlestick Outputs. The function's flags declare which values it can return: rW7.

Value	Meaning
-100	Bearish Separating Lines: the second candle (belt hold) closed black
0	No pattern
100	Bullish Separating Lines: the second candle (belt hold) closed white

Properties

Numerical Stability: Start-Independent

☐ Overlap Input
✅ Independent Y-Axis i
✅ Candlestick i
☐ Display Shift

☐ Can Output NaN or ±Inf
☐ Identity at Period 1
☐ Uses Transcendental
☐ Input Must Be Positive

Example

C

#include <stdio.h>
#include <ta_libc.h>

int n = 252;
double open[252]; /* your data, oldest first */
double high[252]; /* your data, oldest first */
double low[252]; /* your data, oldest first */
double close[252]; /* your data, oldest first */
int out[252];
int outBegIdx, outNBElement;

TA_Initialize();
TA_CDLSEPARATINGLINES( 0, n - 1, open, high, low, close, &outBegIdx, &outNBElement, out );
printf( "%d values from bar %d; last out = %d\n", outNBElement, outBegIdx, out[outNBElement - 1] );

Rust

use ta_lib::Core;

let open = vec![0.0; 252]; // your data, oldest first
let high = vec![0.0; 252]; // your data, oldest first
let low = vec![0.0; 252]; // your data, oldest first
let close = vec![0.0; 252]; // your data, oldest first
let mut out = vec![0i32; 252];

let core = Core::new();
let range = core.cdlseparatinglines(0, open.len() - 1, &open, &high, &low, &close,
                                    &mut out)?;
println!("{} values from bar {}; last out = {}", range.count, range.beg_idx, out[range.count - 1]);

Java

import io.github.talib.Core;
import io.github.talib.OutRange;

double[] open = new double[252]; // your data, oldest first
double[] high = new double[252]; // your data, oldest first
double[] low = new double[252]; // your data, oldest first
double[] close = new double[252]; // your data, oldest first
int[] out = new int[252];

Core core = Core.DEFAULT;
OutRange r = core.cdlseparatinglines(0, open.length - 1, open, high, low, close, out);
System.out.println(r.count() + " values from bar " + r.begIdx() + "; last out = " + out[r.count() - 1]);

C#

using System;
using TALib;

var open = new double[252]; // your data, oldest first
var high = new double[252]; // your data, oldest first
var low = new double[252]; // your data, oldest first
var close = new double[252]; // your data, oldest first
var outInteger = new int[252];

var core = Core.Default;
OutRange r = core.Cdlseparatinglines(0, open.Length - 1, open, high, low, close, outInteger);
Console.WriteLine($"{r.Count} values from bar {r.BegIdx}; last outInteger = {outInteger[r.Count - 1]}");

TypeScript

import { cdlseparatinglines } from 'ta-lib';

const open = new Float64Array(252); // your data, oldest first
const high = new Float64Array(252); // your data, oldest first
const low = new Float64Array(252); // your data, oldest first
const close = new Float64Array(252); // your data, oldest first

const { begIdx, values } = cdlseparatinglines({ open, high, low, close });
console.log(values.length + ' values from bar ' + begIdx + '; last values = ' + values[values.length - 1]);

Implementation

Added in 0.4.0.

TA-Lib Definition: cdlseparatinglines.c · cdlseparatinglines.yaml

Native	File
C	ta_CDLSEPARATINGLINES.c
Rust	cdlseparatinglines.rs
Java	Core_CDLSEPARATINGLINES.java
C#	Core_CDLSEPARATINGLINES.cs
TypeScript	cdlseparatinglines.ts

Python: talib.CDLSEPARATINGLINES, see ta-lib-python.

TA-Lib is also available for R and more using a wrapper.

Aliases

Separating Lines

See Also

CDLBELTHOLD · CDLCOUNTERATTACK