Struct ParabolicSAR

pub struct ParabolicSAR {
    pub state: ParabolicSARState,
}

Parabolic SAR (Stop and Reverse) Indicator

Parabolic SAR is a trend-following indicator that provides stop-loss levels and potential reversal points. It accelerates when the trend continues.

Formula:

• Uptrend: SAR = Previous SAR + AF × (EP - Previous SAR)
• Downtrend: SAR = Previous SAR + AF × (EP - Previous SAR)

Where:

• AF = Acceleration Factor (starts at 0.02, increments by 0.02, max 0.20)
• EP = Extreme Point (highest high in uptrend, lowest low in downtrend)

Fields

state: ParabolicSARState

Implementations

impl ParabolicSAR

pub fn new() -> Self

Create a new Parabolic SAR calculator with default configuration

pub fn with_acceleration( start: f64, increment: f64, maximum: f64, ) -> Result<Self, ParabolicSARError>

Create a new Parabolic SAR calculator with custom acceleration parameters

pub fn with_config(config: ParabolicSARConfig) -> Self

Create a new Parabolic SAR calculator with custom configuration

pub fn calculate( &mut self, input: ParabolicSARInput, ) -> Result<ParabolicSAROutput, ParabolicSARError>

Calculate Parabolic SAR for the given input

pub fn calculate_batch( &mut self, inputs: &[ParabolicSARInput], ) -> Result<Vec<ParabolicSAROutput>, ParabolicSARError>

Calculate Parabolic SAR for a batch of inputs

pub fn reset(&mut self)

Reset the calculator state

pub fn get_state(&self) -> &ParabolicSARState

Get current state (for serialization/debugging)

pub fn set_state(&mut self, state: ParabolicSARState)

Restore state (for deserialization)

pub fn current_trend(&self) -> Option<TrendDirection>

Get current trend direction

pub fn current_acceleration_factor(&self) -> f64

Get current acceleration factor

Trait Implementations

impl Default for ParabolicSAR

fn default() -> Self

Returns the “default value” for a type.