wavetrend

// WaveTrend Oscillator (wt1, wt2)
// Defaults of "wavetrend" (see the indicator reference)
let params = HashMap::from([
    ("n1".to_string(), 10.0),
    ("n2".to_string(), 21.0),
    ("ob_level".to_string(), 60.0),
    ("os_level".to_string(), -60.0),
]);
let mut indicator = build_checked("wavetrend", &params)?;

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