Matching Low (CDLMATCHINGLOW)

Summary

A two-candle pattern of two consecutive black (bearish) candles with equal closes (within a tolerance). Treated as a bullish reversal signal. A hit signals a potential bullish reversal (shared support close after two down candles).

Chart

Reference data (CSV) · Chart (SVG)

Chart metadata i

Outputs

• outInteger: pattern_bull_bear · zero · positive

Formula

Two candles i-1, i. Candle i-1: black (close<open). Candle i: black (close<open). Equal closes: close[i-1]-E <= close[i] <= close[i-1]+E, where E = the Equal average. No shadow, body-size, or gap conditions are checked.

Notes

• The bullish-reversal reading assumes a prior downtrend, which is not verified.
• Although classically read as a bullish reversal (and TA-Lib only emits +100), Bulkowski's testing found it actually acts as a bearish continuation 61% of the time — even so, it still ranks a strong 8th of 103 patterns for overall performance. (thepatternsite.com)

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 when the pattern is present, 0 otherwise. Only +100 is ever emitted (matching low is always bullish); never -100

Output Values

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

Value	Meaning
0	No pattern
100	Matching Low detected — bullish reversal signal (shared support close after two black candles)

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_CDLMATCHINGLOW( 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.cdlmatchinglow(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.cdlmatchinglow(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.Cdlmatchinglow(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 { cdlmatchinglow } 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 } = cdlmatchinglow({ 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: cdlmatchinglow.c · cdlmatchinglow.yaml

Native	File
C	ta_CDLMATCHINGLOW.c
Rust	cdlmatchinglow.rs
Java	Core_CDLMATCHINGLOW.java
C#	Core_CDLMATCHINGLOW.cs
TypeScript	cdlmatchinglow.ts

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

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

Aliases

Matching Low

See Also

CDLHOMINGPIGEON