ScaleRadial class final Linear scales

Radial scales are a variant of linear scales where the range is internally squared so that an input value corresponds linearly to the squared output value.

These scales are useful when you want the input value to correspond to the area of a graphical mark and the mark is specified by radius, as in a radial bar chart. Radial scales do not support ScaleLinear.interpolate.

Implemented types

• Scale<num, Y>

Constructors

ScaleRadial.new({List<num> domain = const [0, 1], List<num> range = const [0, 1]})

Constructs a new radial scale with the specified domain and range.

Properties

clamp ↔ bool

getter/setter pair

domain ↔ List<num>

The scale's domain that specifies the input values.

getter/setter pair, override

hashCode → int

The hash code for this object.

no setter, inherited

range ↔ List<num>

The scale's range that specifies the output values.

getter/setter pair, override

round ↔ bool

getter/setter pair

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

unknown ↔ num?

getter/setter pair

Methods

call(num? x) → num?

Given a value from the domain, returns the corresponding value from the range.

override

copy() → Scale<num, num>

Returns an exact copy of this scale.

override

invert(dynamic y) → dynamic

nice([num count = 10]) → void

Extends the domain so that it starts and ends on nice round values.

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

rangeRound(List<num> range) → void

tickFormat([num count = 10, String? specifier]) → String Function(num)

Returns a number format function suitable for displaying a tick value, automatically computing the appropriate precision based on the fixed interval between tick values.

inherited

ticks([num count = 10]) → List<num>

Returns approximately count representative values from the scale’s domain.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited