TinyColumnChart class

A Widget that paints a simple column chart.

It is ideal for sparkline charts.

The data can be provided by a list of double values by vector_math's Vector2. Then that is the case, the x value in each vector represents the column order and the y represents the value.

The chart renders each column with its respective value. Negative columns are rendered in a specific color with (if specified) an axis line in thee position equal to zero.

If both width and height are passed, the chart will try to keep aspect ratio.

To customize things like column colors and axis line visibility, see options.

See also:

• new TinyColumnChart to build a column chart based on a list of numbers. = TinyColumnChart.fromDataVectors to build a column chart based on a list of Vector2.
• TinyColumnChartOptions for more details on options.

Inheritance

• Object
• DiagnosticableTree
• Widget
• StatefulWidget
• TinyColumnChart

Constructors

TinyColumnChart({Key? key, required Iterable<double> data, TinyColumnChartOptions? options, double? width, double? height})

Creates a TinyColumnChart from a Iterable of double.

factory

TinyColumnChart.fromDataVectors({Key? key, required Iterable<Vector2> dataPoints, TinyColumnChartOptions? options, double? width, double? height})

Creates a TinyLineChart from a Iterable of Vector2.

const

Properties

dataPoints → Iterable<Vector2>

The set of vectors that represents the columns data.

final

hashCode → int

The hash code for this object.

no setter, inherited

height → double?

If non-null, require the chart to have this height.

final

key → Key?

Controls how one widget replaces another widget in the tree.

final, inherited

options → TinyColumnChartOptions

A set of options to customize the chart display, defaults to kDefaultColumnChartOptions when null on construction.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

width → double?

If non-null, require the chart to have this width.

final

Methods

createElement() → StatefulElement

Creates a StatefulElement to manage this widget's location in the tree.

inherited

createState() → State<TinyColumnChart>

Creates the mutable state for this widget at a given location in the tree.

override

debugDescribeChildren() → List<DiagnosticsNode>

Returns a list of DiagnosticsNode objects describing this node's children.

inherited

debugFillProperties(DiagnosticPropertiesBuilder properties) → void

Add additional properties associated with the node.

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode

Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.

inherited

toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String

A string representation of this object.

inherited

toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String

Returns a string representation of this node and its descendants.

inherited

toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String

Returns a one-line detailed description of the object.

inherited

toStringShort() → String

A short, textual description of this widget.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited