Struct TdLines 

pub struct TdLines { /* private fields */ }

TD Lines (TDST) — setup-derived horizontal support / resistance.

Example

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

let mut indicator = TdLines::new(4, 9).unwrap();
// `None` during warmup, then `Some(_)` once enough bars are seen.
let mut out = None;
for i in 0..40i64 {
    let p = 100.0 + (i as f64 * 0.4).sin() * 5.0;
    let candle = Candle::new(p, p + 1.5, p - 1.5, p + 0.3, 1_000.0, i).unwrap();
    out = indicator.update(candle);
}
let _ = out;

Implementations

impl TdLines

pub fn new(lookback: usize, target: usize) -> Result<Self>

Construct a TD Lines with explicit lookback and target. The canonical DeMark configuration is lookback = 4, target = 9.

Errors

Returns Error::PeriodZero if either argument is zero.

pub fn classic() -> Self

DeMark’s classic configuration: lookback = 4, target = 9.

pub const fn params(&self) -> (usize, usize)

Configured (lookback, target).

Trait Implementations

impl Clone for TdLines

fn clone(&self) -> TdLines

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TdLines

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

Formats the value using the given formatter.

impl Indicator for TdLines

fn warmup_period(&self) -> usize

Lower bound only: a TDST line needs a completed setup, which depends on the data, so the first value can arrive arbitrarily later than this — and on a series that never completes a setup, never.

type Input = Candle

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

type Output = TdLinesOutput

Type of one output value.

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

Feed one new data point into the indicator and return the freshly computed output, or None if there is no value for this input.

fn reset(&mut self)

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

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.