LineChartBarData class

Holds data for drawing each individual line in the LineChart

Constructors

LineChartBarData({List<FlSpot> spots = const [], bool show = true, Color? color, Gradient? gradient, double barWidth = 2.0, bool isCurved = false, double curveSmoothness = 0.35, bool preventCurveOverShooting = false, double preventCurveOvershootingThreshold = 10.0, bool isStrokeCapRound = false, bool isStrokeJoinRound = false, BarAreaData? belowBarData, BarAreaData? aboveBarData, FlDotData dotData = const FlDotData(), FlErrorIndicatorData<LineChartSpotErrorRangeCallbackInput> errorIndicatorData = const FlErrorIndicatorData<LineChartSpotErrorRangeCallbackInput>(), List<int> showingIndicators = const [], List<int>? dashArray, Shadow shadow = const Shadow(color: Colors.transparent), bool isStepLineChart = false, LineChartStepData lineChartStepData = const LineChartStepData()})

BarChart draws some lines and overlaps them in the chart's view, You can have multiple lines by splitting them, put a FlSpot.nullSpot between each section. each line passes through spots, with hard edges by default, isCurved makes it curve for drawing, and curveSmoothness determines the curve smoothness.

Properties

aboveBarData → BarAreaData

Fills the space above the line, using a color or gradient.

final

barWidth → double

Determines thickness of drawing line.

final

belowBarData → BarAreaData

Fills the space blow the line, using a color or gradient.

final

color → Color?

If provided, this LineChartBarData draws with this color Otherwise we use gradient to draw the background. It throws an exception if you provide both color and gradient

final

curveSmoothness → double

If isCurved is true, it determines smoothness of the curved edges.

final

dashArray → List<int>?

Determines the dash length and space respectively, fill it if you want to have dashed line.

final

dotData → FlDotData

Responsible to showing spots on the line as a circular point.

final

errorIndicatorData → FlErrorIndicatorData<LineChartSpotErrorRangeCallbackInput>

Holds data for showing error indicators on the spots in this line.

final

gradient → Gradient?

If provided, this LineChartBarData draws with this gradient. Otherwise we use color to draw the background. It throws an exception if you provide both color and gradient

final

hashCode → int

The hash code for this object.

no setter, inherited

isCurved → bool

If it's true, LineChart draws the line with curved edges, otherwise it draws line with hard edges.

final

isStepLineChart → bool

If sets true, it draws the chart in Step Line Chart style, using LineChartBarData.lineChartStepData.

final

isStrokeCapRound → bool

Determines the style of line's cap.

final

isStrokeJoinRound → bool

Determines the style of line joins.

final

lineChartStepData → LineChartStepData

Holds data for representing a Step Line Chart, and works only if isStepChart is true.

final

mostBottomSpot ↔ FlSpot

We keep the most bottom spot to prevent redundant calculations

late, final

mostLeftSpot ↔ FlSpot

We keep the most left spot to prevent redundant calculations

late, final

mostRightSpot ↔ FlSpot

We keep the most right spot to prevent redundant calculations

late, final

mostTopSpot ↔ FlSpot

We keep the most top spot to prevent redundant calculations

late, final

preventCurveOverShooting → bool

Prevent overshooting when draw curve line with high value changes. check this issue

final

preventCurveOvershootingThreshold → double

Applies threshold for preventCurveOverShooting algorithm.

final

props → List<Object?>

Used for equality check, see EquatableMixin.

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

shadow → Shadow

Drops a shadow behind the bar line.

final

show → bool

Determines to show or hide the line.

final

showingIndicators → List<int>

Show indicators based on provided indexes

final

spots → List<FlSpot>

This line goes through this spots.

final

stringify → bool?

If set to true, the toString method will be overridden to output this instance's props.

no setter, inherited

Methods

copyWith({List<FlSpot>? spots, bool? show, Color? color, Gradient? gradient, double? barWidth, bool? isCurved, double? curveSmoothness, bool? preventCurveOverShooting, double? preventCurveOvershootingThreshold, bool? isStrokeCapRound, bool? isStrokeJoinRound, BarAreaData? belowBarData, BarAreaData? aboveBarData, FlDotData? dotData, FlErrorIndicatorData<LineChartSpotErrorRangeCallbackInput>? errorIndicatorData, List<int>? dashArray, List<int>? showingIndicators, Shadow? shadow, bool? isStepLineChart, LineChartStepData? lineChartStepData}) → LineChartBarData

Copies current LineChartBarData to a new LineChartBarData, and replaces provided values.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

lerp(LineChartBarData a, LineChartBarData b, double t) → LineChartBarData

Lerps a LineChartBarData based on t value, check Tween.lerp.