Short Line Candle (CDLSHORTLINE)

Summary

Single-candle pattern: a short real body with short upper and lower shadows (a small-range candle). Not a directional signal — the output sign encodes candle color, not bullish/bearish sentiment.

Formula

One candle at i, all three:

short real body: real body < the BodyShort average
short upper shadow: upper shadow < the ShadowShort average
short lower shadow: lower shadow < the ShadowShort average If matched: output = candle color * 100 (+100 white, -100 black); else 0.

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 matching white candle (close>=open), -100 for a matching black candle (close<open), 0 when no pattern. Sign is candle color, NOT bullish/bearish

Output Values

Value	Meaning
-100	Matching black short-line candle (color only — not a bearish call)
0	No pattern
100	Matching white short-line candle (color only — not a bullish call)

Properties

Numerical Stability: Start-Independent


☐ Overlap Input
✅ Independent Y-Axis i
✅ Candlestick i
☐ Can Output NaN or ±Inf
☐ Identity at Period 1

Implementation

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

Native	File
C	`ta_CDLSHORTLINE.c`
Rust	`cdlshortline.rs`
Java	`Core_CDLSHORTLINE.java`

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

Aliases

Short Line Candle, Short Line