ScaleSymlog<Y> class final Symlog scales

See A bi-symmetric log transformation for wide-range data by Webber for details. Unlike a ScaleLog, a symlog scale domain can include zero.

Implemented types

• Scale<X, Y>

Constructors

ScaleSymlog.new({List<num> domain = const [0, 1], required List<Y> range, required Interpolate<Y> interpolate})

Constructs a new continuous scale with the specified domain, range and interpolate, the constant 1, and clamping disabled.

Properties

clamp ↔ bool

Whether or not the scale currently clamps values to within the range.

getter/setter pair, inherited

constant ↔ num

getter/setter pair, inherited

domain ↔ List<num>

The scale's domain that specifies the input values.

getter/setter pair, inherited

hashCode → int

The hash code for this object.

no setter, inherited

interpolate ↔ Interpolate<Y>

The scale’s range interpolator factory.

getter/setter pair, inherited

range ↔ List<Y>

The scale's range that specifies the output values.

getter/setter pair, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

unknown ↔ Y?

The output value of the scale for null (or double.nan) input values.

getter/setter pair, inherited

Methods

call(num? x) → Y?

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

inherited

copy() → ScaleSymlog<Y>

Returns an exact copy of this scale.

override

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

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

Static Methods

dynamic({List<num> domain = const [0, 1], List<Object?> range = const <num>[0, 1], Interpolate<Object?> interpolate = interpolate}) → ScaleSymlog<Object?>

number({List<num> domain = const [0, 1], List<num> range = const [0, 1], Interpolate<num> interpolate = interpolateNumber}) → ScaleSymlog<num>