Enum Scale 

#[non_exhaustive]
pub enum Scale {
    Identity,
    Ln,
    Log2,
    Log10,
}

Axis scaling transform applied before coordinate mapping.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Identity

No transform; values pass through unchanged.

Ln

Natural logarithm.

Log2

Base-2 logarithm.

Log10

Base-10 logarithm.

Implementations

impl Scale

pub fn apply(self, value: f64) -> f64

Applies this scale to value, returning the transformed result.

Log scales follow IEEE 754 semantics: log(0) is negative infinity, log(negative) is NaN.

Trait Implementations

impl Clone for Scale

fn clone(&self) -> Scale

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Scale

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

Formats the value using the given formatter.

impl PartialEq for Scale

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Scale

impl StructuralPartialEq for Scale