ChartAxisConfig class

Describes one axis on a chart (X or Y).

Constructors

ChartAxisConfig({AxisScaleType scaleType = AxisScaleType.linear, AxisPosition position = AxisPosition.left, String? label, double? min, double? max, int tickCount = 5, double logBase = 10, List<String>? categories, String tickFormatter(double value)?, String timeFormatter(DateTime dt)?, bool showAxisLine = true, bool showTicks = true, bool showGrid = true, bool showLabels = true, bool inverted = false})

const

ChartAxisConfig.category({AxisPosition position = AxisPosition.bottom, required List<String> categories, String? label, bool showGrid = false})

const

ChartAxisConfig.fromJson(Object? raw)

factory

ChartAxisConfig.linear({AxisPosition position = AxisPosition.left, double? min, double? max, int tickCount = 5, String? label, bool showGrid = true})

const

ChartAxisConfig.log({AxisPosition position = AxisPosition.left, double? min, double? max, double logBase = 10, String? label})

const

ChartAxisConfig.percent({AxisPosition position = AxisPosition.left, String? label})

const

ChartAxisConfig.time({AxisPosition position = AxisPosition.bottom, double? min, double? max, int tickCount = 6, String? label})

const

Properties

categories → List<String>?

Discrete category labels, ordered. Required when scaleType == AxisScaleType.category.

final

hashCode → int

The hash code for this object.

no setter, inherited

inverted → bool

Whether to invert the axis direction.

final

label → String?

Human-readable axis label (optional).

final

logBase → double

If scaleType is AxisScaleType.log, the logarithm base (default 10).

final

max → double?

Override maximum value. If null, computed from data.

final

min → double?

Override minimum value. If null, computed from data.

final

position → AxisPosition

Where this axis is rendered.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

scaleType → AxisScaleType

Axis scaling algorithm.

final

showAxisLine → bool

Whether to show the axis line.

final

showGrid → bool

Whether to show grid lines projected from this axis.

final

showLabels → bool

Whether to show axis label text.

final

showTicks → bool

Whether to show tick marks.

final

tickCount → int

Number of tick marks. Ignored for AxisScaleType.category.

final

tickFormatter → String Function(double value)?

Custom tick formatter. If null, a sensible default is used.

final

timeFormatter → String Function(DateTime dt)?

Custom tick formatter for DateTime ticks (used with AxisScaleType.time).

final

Methods

computeTicks(double dataMin, double dataMax) → List<double>

Generate tick values in data space.

formatTick(double value) → String

Format a tick value as a display string.

normalize(double value, double dataMin, double dataMax) → double

Convert a raw data value to 0..1 normalised.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toJson() → Map<String, dynamic>

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited