Struct BollingerBands

pub struct BollingerBands { /* private fields */ }

Bollinger Bands indicator.

Implementations

impl BollingerBands

pub fn new(period: usize, multiplier: f64) -> Result<Self, SMAError>

Creates a new BollingerBands indicator.

Arguments

• period - The number of values for the moving average and standard deviation.
• multiplier - The multiplier applied to the standard deviation to determine band width.

Returns

• Ok(BollingerBands) on success, or Err(SMAError) if the underlying SMA creation fails.

Examples

use indexes_rs::v1::bollinger::main::BollingerBands;

let bb = BollingerBands::new(20, 2.0);
assert!(bb.is_ok());

pub fn calculate(&mut self, price: f64) -> Option<BBResult>

Calculates the Bollinger Bands for the given price.

The method updates the internal SMA and sliding window of prices. It returns a BBResult containing the upper, middle, and lower bands when enough data is available.

Arguments

• price - The latest price.

Returns

• Some(BBResult) if enough data is available.
• None if not enough data has been collected.