Struct AdOscillator 

pub struct AdOscillator { /* private fields */ }

Williams A/D Oscillator — the volume-free Williams Accumulation/ Distribution line measured against its own moving average, so it oscillates around zero instead of drifting like the cumulative line.

The underlying line is Larry Williams’ volume-less A/D (1972), which uses a true high/low anchored on the prior close; the oscillator subtracts its 13-bar simple moving average:

TR_h_t = max(close_{t−1}, high_t)
TR_l_t = min(close_{t−1}, low_t)
WAD_t  = WAD_{t−1} + (close_t − TR_l_t)   if close_t > close_{t−1}
WAD_t  = WAD_{t−1} + (close_t − TR_h_t)   if close_t < close_{t−1}
WAD_t  = WAD_{t−1}                          if close_t == close_{t−1}
ADOSC_t = WAD_t − SMA(WAD, 13)_t

This is distinct from the raw cumulative line, which Wickra ships as Wad: Wad is the drifting line for divergence analysis, while this oscillator is its zero-centred, mean-reverting form (positive when accumulation is running ahead of its recent average, negative when distribution is). The first bar only seeds the previous close; the first oscillator value lands once the 13-bar average of the line is full.

Example

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

let mut indicator = AdOscillator::new();
let mut last = None;
for i in 0..80 {
    let base = 100.0 + f64::from(i);
    let candle =
        Candle::new(base, base + 2.0, base - 2.0, base + 1.0, 10.0, i64::from(i)).unwrap();
    last = indicator.update(candle);
}
assert!(last.is_some());

Implementations

impl AdOscillator

pub fn new() -> Self

Construct a new Williams A/D Oscillator.

pub const fn value(&self) -> Option<f64>

Current oscillator value if available.

Trait Implementations

impl Clone for AdOscillator

fn clone(&self) -> AdOscillator

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AdOscillator

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

Formats the value using the given formatter.

impl Default for AdOscillator

fn default() -> Self

Returns the “default value” for a type.

impl Indicator for AdOscillator

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.