Struct LinearDeviation 

pub struct LinearDeviation { /* private fields */ }

Linear Deviation — the percentage distance between the current close and the least-squares linear regression value for that bar over the last period bars.

linear_dev = (close - linreg_value) / close × 100

Positive values mean price is above the regression line (overbought pressure); negative values mean price is below (oversold pressure).

Returns SignalValue::Unavailable until period bars have been seen or close is zero.

Example

use fin_primitives::signals::indicators::LinearDeviation;
use fin_primitives::signals::Signal;

let ld = LinearDeviation::new("ld", 14).unwrap();
assert_eq!(ld.period(), 14);

Implementations

impl LinearDeviation

pub fn new(name: impl Into<String>, period: usize) -> Result<Self, FinError>

Creates a new LinearDeviation.

Errors

Returns FinError::InvalidPeriod if period < 2.

Trait Implementations

impl Signal for LinearDeviation

fn name(&self) -> &str

Returns the name of this signal (unique within a pipeline).

fn update(&mut self, bar: &BarInput) -> Result<SignalValue, FinError>

Updates the signal with a BarInput and returns the current value.

fn is_ready(&self) -> bool

Returns true if the signal has accumulated enough bars to produce a value.

fn period(&self) -> usize

Returns the number of bars required before the signal produces a value.

fn reset(&mut self)

Resets the signal to its initial state as if no bars had been seen.

fn update_bar(&mut self, bar: &OhlcvBar) -> Result<SignalValue, FinError>

Convenience wrapper: converts bar to BarInput and calls Self::update.

fn warm_up(&mut self, bars: &[BarInput]) -> Result<SignalValue, FinError>

Feed a slice of historical bars to prime the indicator in one call.