Struct Adxr 

pub struct Adxr { /* private fields */ }

Wilder’s Average Directional Movement Index Rating.

ADXR smooths the Adx line by averaging its current value with the value it had period bars ago:

ADXR_t = (ADX_t + ADX_{t - (period - 1)}) / 2

The lookback length is the same period that feeds the underlying ADX. Wilder introduced ADXR alongside ADX in New Concepts in Technical Trading Systems (1978) as a more stable directional-strength reading: because the older ADX is period - 1 bars stale, ADXR responds more slowly than ADX and is used to compare trend-strength between different instruments.

The first complete ADXR is emitted after 3 * period - 1 candles (2 * period to seed the ADX plus another period - 1 to fill the lookback ring).

Example

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

let mut indicator = Adxr::new(5).unwrap();
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 Adxr

pub fn new(period: usize) -> Result<Self>

Construct a new ADXR with the given Wilder smoothing period.

Errors

Returns Error::PeriodZero if period == 0.

pub const fn period(&self) -> usize

Configured period.

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

Current value if available.

Trait Implementations

impl Clone for Adxr

fn clone(&self) -> Adxr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Adxr

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

Formats the value using the given formatter.

impl Indicator for Adxr

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.