Struct AlligatorEngine 

pub struct AlligatorEngine { /* private fields */ }

Williams Alligator: three smoothed averages of the median price, shifted forward.

Jaw, teeth and lips are Wilder averages (Rma, seeded with the SMA of their first values) of (high + low) / 2 over 13, 8 and 5 bars, shifted forward by 8, 5 and 3 bars: the value published for a line is the one it had that many outputs earlier. The shift is applied through a window that only starts filling once all three averages exist, so right after the first output it is still zero and reaches its full length after 8, 5 and 3 further outputs.

value and extra["lips"]: the lips; extra["jaw"] and extra["teeth"]. First output: with the 13th bar, when the jaw’s average exists. Indicator::reset clears the averages and the shift windows.

Implementations

impl AlligatorEngine

pub fn new() -> Self

Trait Implementations

impl Clone for AlligatorEngine

fn clone(&self) -> AlligatorEngine

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for AlligatorEngine

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for AlligatorEngine

fn default() -> Self

Returns the “default value” for a type.

impl Indicator for AlligatorEngine

fn name(&self) -> &str

fn warmup_period(&self) -> usize

fn reset(&mut self)

fn on_bar(&mut self, bar: &Bar) -> Option<IndicatorOutput>

fn alerts(&self) -> Vec<IndicatorAlert>

fn on_checked_bar( &mut self, bar: &Bar, ) -> Result<Option<IndicatorOutput>, BarValidationError>

Validates a bar before forwarding it to Indicator::on_bar.