Struct RickshawMan 

pub struct RickshawMan { /* private fields */ }

Rickshaw Man — a single-bar indecision signal. A long-legged doji whose tiny body sits near the middle of a wide range, the most balanced form of indecision: neither side controlled the close and the midpoint pins it.

range = high − low
doji        = |close − open| <= 0.1 * range
long upper  = high − max(open, close) >= 0.3 * range
long lower  = min(open, close) − low  >= 0.3 * range
centred body = body midpoint within the central 40–60 % of the range

Output is +1.0 when the rickshaw man prints and 0.0 otherwise. This is a non-directional indecision flag — it never emits −1.0. A rickshaw man is a special case of a long-legged doji (the body additionally sits at the centre), so both detectors may flag the same bar. Body and shadow thresholds follow the geometric house style (fixed fractions of the bar range) 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 detected, 0.0 no pattern — so it drops straight into a machine-learning feature matrix as a single dimension.

Example

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

let mut indicator = RickshawMan::new();
// Tiny body centred in a wide range, long shadows both sides.
let candle = Candle::new(10.0, 12.0, 8.0, 10.0, 1.0, 0).unwrap();
assert_eq!(indicator.update(candle), Some(1.0));

Implementations

impl RickshawMan

pub const fn new() -> Self

Construct a new Rickshaw Man detector.

Trait Implementations

impl Clone for RickshawMan

fn clone(&self) -> RickshawMan

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RickshawMan

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

Formats the value using the given formatter.

impl Default for RickshawMan

fn default() -> RickshawMan

Returns the “default value” for a type.

impl Indicator for RickshawMan

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.