Enum ScaleType 

pub enum ScaleType {
    Linear,
    Logarithmic {
        base: f64,
    },
    Symlog {
        lin_threshold: f64,
    },
    Time {
        epoch: TimeEpoch,
    },
}

Scale type for axis transformation.

Determines how data values are mapped to pixel coordinates.

Variants

Linear

Linear scale (default).

Data values are mapped linearly to pixel coordinates.

Logarithmic

Logarithmic scale.

Useful for data spanning multiple orders of magnitude. Data must be > 0.

Fields

base: f64

Log base (typically 10 or e)

Symlog

Symmetric logarithmic scale.

Like log scale but handles negative values and zero. Uses linear scale near zero and log scale for larger values.

Fields

lin_threshold: f64

Threshold below which linear scaling is used

Time

Time-based scale.

Data values are interpreted as timestamps.

Fields

epoch: TimeEpoch

Time epoch for interpretation

Implementations

impl ScaleType

pub fn log10() -> Self

Create a base-10 logarithmic scale.

pub fn ln() -> Self

Create a natural logarithmic scale.

pub fn symlog(threshold: f64) -> Self

Create a symmetric log scale with the given threshold.

pub fn time() -> Self

Create a time scale with Unix epoch.

pub fn normalize(&self, value: f64, min: f64, max: f64) -> f64

Transform a data value to normalized coordinates [0, 1].

Given a value in the range [min, max], returns a normalized value.

pub fn denormalize(&self, normalized: f64, min: f64, max: f64) -> f64

Transform a normalized coordinate back to data value.

Inverse of normalize.

Trait Implementations

impl Clone for ScaleType

fn clone(&self) -> ScaleType

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ScaleType

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

Formats the value using the given formatter.

impl Default for ScaleType

fn default() -> ScaleType

Returns the “default value” for a type.

impl PartialEq for ScaleType

fn eq(&self, other: &ScaleType) -> 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 ScaleType

impl StructuralPartialEq for ScaleType