Struct LinRegAngle 

pub struct LinRegAngle { /* private fields */ }

Linear Regression Angle — the slope of the rolling least-squares fit, expressed as an angle in degrees.

LinRegAngle = atan(LinRegSlope) · 180 / π

It carries exactly the same information as LinRegSlope — positive while price trends up, negative while it trends down — but maps the unbounded slope through atan onto (−90°, +90°). That bounded, price-unit-free scale makes “how steep is the trend” comparable at a glance and across instruments. This is TA-Lib’s LINEARREG_ANGLE.

Example

use wickra_core::{Indicator, LinRegAngle};

let mut indicator = LinRegAngle::new(14).unwrap();
let mut last = None;
for i in 0..80 {
    last = indicator.update(f64::from(i));
}
assert!(last.is_some());

Implementations

impl LinRegAngle

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

Construct a new rolling linear-regression angle over period inputs.

Errors

Returns Error::InvalidPeriod if period < 2 — a regression line is undefined for fewer than two points.

pub const fn period(&self) -> usize

Configured period.

Trait Implementations

impl Clone for LinRegAngle

fn clone(&self) -> LinRegAngle

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LinRegAngle

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

Formats the value using the given formatter.

impl Indicator for LinRegAngle

type Input = f64

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, value: f64) -> 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.