Function zigzag 

pub fn zigzag(
    highs: &[f64],
    lows: &[f64],
    deviation_pct: f64,
) -> Result<Vec<ZigZagPoint>>

Calculate ZigZag swing points from high/low series using a percentage reversal threshold.

Starting from the first bar, price must move by at least deviation_pct (e.g. 5.0 for 5%) away from the running extreme before a reversal is confirmed and a pivot recorded. Consecutive pivots always alternate between highs and lows. The final unconfirmed extreme (the most recent swing-in-progress) is included as the last point.

Arguments

• highs - High prices
• lows - Low prices
• deviation_pct - Minimum reversal size as a percentage (e.g. 5.0 = 5%)

Example

use finance_query::indicators::zigzag;

let highs = vec![100.0, 110.0, 90.0, 120.0, 80.0];
let lows = vec![100.0, 110.0, 90.0, 120.0, 80.0];
let pivots = zigzag(&highs, &lows, 5.0).unwrap();

assert_eq!(pivots.len(), 4);
assert!(pivots[0].is_high);
assert!(!pivots[1].is_high);