Struct MorningDojiStar 

pub struct MorningDojiStar { /* private fields */ }

Morning Doji Star — a 3-bar bullish bottom reversal. A long black bar extends the decline, a doji gaps down below it (the star of indecision), then a white bar gaps back up and closes deep into the first body, confirming the turn.

long body = |close − open| >= 0.5 * (high − low)
doji      = |close − open| <= 0.1 * (high − low)
bar1 black & long
bar2 doji, body gaps DOWN below bar1 body      (max(o2,c2) < close1)
bar3 white, body gaps UP above the doji         (min(o3,c3) > max(o2,c2))
bar3 closes deep into bar1 body                 (close3 > close1 + penetration·body1)

Output is +1.0 when the pattern completes and 0.0 otherwise. Morning Doji Star is a single-direction (bullish-only) reversal, so it never emits −1.0. The first two bars always return 0.0 because the three-bar window is not yet filled. penetration is how far into the first body the third bar must close; it defaults to 0.3 (TA-Lib’s CDLMORNINGDOJISTAR default) and must lie in [0, 1). Body and doji thresholds follow the geometric house style rather than TA-Lib’s rolling averages. Pattern-shape check only — no trend filter is applied; combine with a trend indicator for actionable signals.

Signed ±1 encoding

This detector emits the uniform candlestick sign convention shared across the pattern family — +1.0 bullish, 0.0 no pattern — so it drops straight into a machine-learning feature matrix as a single dimension.

Example

use wickra_core::{Candle, Indicator, MorningDojiStar};

let mut indicator = MorningDojiStar::new();
indicator.update(Candle::new(15.0, 15.1, 9.9, 10.0, 1.0, 0).unwrap());
indicator.update(Candle::new(8.0, 8.1, 7.9, 8.0, 1.0, 1).unwrap());
let out = indicator
    .update(Candle::new(9.0, 13.1, 8.9, 13.0, 1.0, 2).unwrap());
assert_eq!(out, Some(1.0));

Implementations

impl MorningDojiStar

pub const fn new() -> Self

Construct a Morning Doji Star detector with the default 0.3 penetration.

pub fn with_penetration(penetration: f64) -> Result<Self>

Construct a Morning Doji Star detector with a custom penetration fraction.

penetration must lie in [0, 1).

pub fn penetration(&self) -> f64

Configured penetration fraction.

Trait Implementations

impl Clone for MorningDojiStar

fn clone(&self) -> MorningDojiStar

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MorningDojiStar

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for MorningDojiStar

fn default() -> Self

Returns the “default value” for a type.

impl Indicator for MorningDojiStar

type Input = Candle

Type of one input data point (typically f64 for a price, or Candle / Tick).

type Output = f64

Type of one output value.

fn update(&mut self, candle: Candle) -> Option<f64>

Feed one new data point into the indicator and return the freshly computed output, or None if the indicator is still warming up.

fn reset(&mut self)

Reset all internal state, leaving the indicator equivalent to a freshly constructed instance with the same parameters.

fn warmup_period(&self) -> usize

Number of inputs required before the first non-None output can be produced.

fn is_ready(&self) -> bool

Whether the indicator has emitted at least one value since the last reset.

fn name(&self) -> &'static str

Stable, human-readable indicator name. Used by chaining and diagnostics.