Struct ScaleSqrt 

pub struct ScaleSqrt { /* private fields */ }

Square root scale for bubble sizes. Maps continuous domain to continuous range via sqrt transformation. Equivalent to D3’s scaleSqrt(). This is a power scale with exponent 0.5.

Implementations

impl ScaleSqrt

pub fn new(domain: (f64, f64), range: (f64, f64)) -> Self

Create a new sqrt scale with the given domain and range.

pub fn map(&self, value: f64) -> f64

Map a domain value to a range value using sqrt interpolation. Negative domain values are clamped to 0 before sqrt.

pub fn invert(&self, value: f64) -> f64

Inverse mapping: range value back to domain value.

pub fn ticks(&self, count: usize) -> Vec<f64>

Generate ticks by computing them in sqrt-transformed space, then squaring back to the original domain.

pub fn domain(&self) -> (f64, f64)

Get the domain extent.

pub fn range(&self) -> (f64, f64)

Get the range extent.

Trait Implementations

impl ContinuousScale for ScaleSqrt

fn map(&self, value: f64) -> f64

Map a domain value to a range value.

fn domain(&self) -> (f64, f64)

Get the domain extent as (min, max).

fn range(&self) -> (f64, f64)

Get the range extent as (min, max).

fn ticks(&self, count: usize) -> Vec<f64>

Generate approximately count nice tick values within the domain.

fn clamp(&self, value: f64) -> f64

Clamp a value to domain bounds.