ChartPoint class final

One (x, y) sample in a chart series, with an optional label (decision D4).

A point is the backing shape for scatter series and any chart that places data in a two-dimensional value space (rather than a category → value map). It holds only numbers and a string, so it lives under elements/chart/data/ alongside ChartSeries — the chart owns its data shapes, they are not a cross-layer currency in core.

Two points are equal when x, y, and label all match, which keeps frame caching honest (identical data → identical geometry → cacheable frames).

const ChartPoint(x: 12, y: 4.5, label: 'Q1')

Annotations

• @immutable

Constructors

ChartPoint({required num x, required num y, String? label})

Creates a point at (x, y) with an optional label.

const

Properties

hashCode → int

The hash code for this object.

no setter, override

label → String?

An optional human label for this point, or null when unlabeled.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

x → num

The point's horizontal value, in data units (not pixels).

final

y → num

The point's vertical value, in data units (not pixels).

final

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

override