Struct BarRangeStdDev 

pub struct BarRangeStdDev { /* private fields */ }

Bar Range Standard Deviation — the population standard deviation of the high - low range over the last period bars.

This measures how consistent bar sizes are. A low value indicates uniform range (orderly market); a high value indicates range is erratic.

Returns SignalValue::Unavailable until period bars have been seen.

Example

use fin_primitives::signals::indicators::BarRangeStdDev;
use fin_primitives::signals::Signal;

let brsd = BarRangeStdDev::new("brsd", 20).unwrap();
assert_eq!(brsd.period(), 20);

Implementations

impl BarRangeStdDev

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

Constructs a new BarRangeStdDev.

Errors

Returns FinError::InvalidPeriod if period < 2.

Trait Implementations

impl Signal for BarRangeStdDev

fn name(&self) -> &str

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

fn period(&self) -> usize

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

fn is_ready(&self) -> bool

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

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

Updates the signal with a BarInput and returns the current 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.