chande_kroll

// Chande Kroll Stop (window extremes minus/plus a Wilder-smoothed ATR, passed through a second extreme window)
// Defaults of "chande_kroll" (see the indicator reference)
let params = HashMap::from([
    ("atr_len".to_string(), 10.0),
    ("mult".to_string(), 3.0),
    ("stop_len".to_string(), 9.0),
]);
let mut indicator = build_checked("chande_kroll", &params)?;

for bar in &bars {
    if let Some(output) = indicator.on_bar(bar) {
        // output.value, output.extra[...], indicator.alerts()
    }
}