Enum EmaInit 

pub enum EmaInit {
    FirstSample,
    Sma,
}

How an Ema produces its first value.

The recurrence alpha * src + (1 - alpha) * prev with alpha = 2/(len+1) is the same in both modes; only the value it starts from differs, and with it how long the series carries the influence of that start. At len == 1 (alpha == 1) both modes produce the same values.

Variants

FirstSample

Seeds with the input value itself and emits from the first sample on. The default, and the historical behaviour of this type.

Sma

Seeds with the SMA of the first len samples and emits from the len-th sample on. Earlier samples produce no value — a partially accumulated average is not an EMA.

Trait Implementations

impl Clone for EmaInit

fn clone(&self) -> EmaInit

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for EmaInit

impl Debug for EmaInit

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

Formats the value using the given formatter.

impl Default for EmaInit

fn default() -> EmaInit

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for EmaInit

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for EmaInit

impl PartialEq for EmaInit

fn eq(&self, other: &EmaInit) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for EmaInit

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for EmaInit