RadialBarSeries<T, D> class Null safety

Renders the radial bar series.

The radial bar chart is used for showing the comparisons among the categories using the circular shapes. To render a radial bar chart, create an instance of RadialBarSeries, and add to the series collection property of SfCircularChart.

Provides options to customize the maximumValue, trackColor, trackBorderColor, trackBorderWidth, trackOpacity and useSeriesColor of the radial segments.



RadialBarSeries({ValueKey<String>? key, ChartSeriesRendererFactory<T, D>? onCreateRenderer, CircularSeriesRendererCreatedCallback? onRendererCreated, ChartPointInteractionCallback? onPointTap, ChartPointInteractionCallback? onPointDoubleTap, ChartPointInteractionCallback? onPointLongPress, List<T>? dataSource, required ChartValueMapper<T, D> xValueMapper, required ChartValueMapper<T, num> yValueMapper, ChartValueMapper<T, Color>? pointColorMapper, ChartShaderMapper<T>? pointShaderMapper, ChartValueMapper<T, String>? pointRadiusMapper, ChartValueMapper<T, String>? dataLabelMapper, ChartValueMapper<T, String>? sortFieldValueMapper, Color trackColor = const Color.fromRGBO(234, 236, 239, 1.0), double trackBorderWidth = 0.0, double trackOpacity = 1, bool useSeriesColor = false, Color trackBorderColor = Colors.transparent, double? maximumValue, DataLabelSettings? dataLabelSettings, String? radius, String? innerRadius, String? gap, double? strokeWidth, double? opacity, Color? strokeColor, bool? enableTooltip, String? name, double? animationDuration, double? animationDelay, SelectionBehavior? selectionBehavior, SortingOrder? sortingOrder, LegendIconType? legendIconType, CornerStyle? cornerStyle, List<int>? initialSelectedDataIndexes})
Creating an argument constructor of RadialBarSeries class.


animationDelay double
Delay duration of the series animation. It takes a millisecond value as input. By default, the series will get animated for the specified duration. If animationDelay is specified, then the series will begin to animate after the specified duration.
final, inherited
animationDuration double
Duration for animating the data points.
final, inherited
borderColor Color
Border color of the data points in the series.
final, inherited
borderWidth double
Border width of the data points in the series.
final, inherited
cornerStyle CornerStyle
Specifies the radial bar’s corner type.
final, inherited
dataLabelMapper ChartIndexedValueMapper<String>?
Maps the field name, which will be considered as a text for the data points.
final, inherited
dataLabelSettings DataLabelSettings
Customizes the data labels in a series. Data label is a text, which displays the details about the data point.
final, inherited
dataSource List<T>?
A collection of data required for rendering the series.
final, inherited
emptyPointSettings EmptyPointSettings
Customizes the empty data points in the series.
final, inherited
enableTooltip bool
Determines whether to enable tooltip.
final, inherited
endAngle int
Ending angle of the series.
final, inherited
explode bool
Enables or disables the explode of slices on tap.
final, inherited
explodeAll bool
Enables or disables exploding all the slices at the initial rendering.
final, inherited
explodeGesture ActivationMode
Gesture for activating the explode.
final, inherited
explodeIndex int?
Index of the slice to explode it at the initial rendering.
final, inherited
explodeOffset String
Offset of exploded slice. The value ranges from 0% to 100%.
final, inherited
gap String
Specifies the gap between the radial bars in percentage.
final, inherited
groupMode CircularChartGroupMode?
Slice can also be grouped based on the data points value or based on index.
final, inherited
groupTo double?
Groups the data points of the series based on their index or values.
final, inherited
hashCode int
The hash code for this object.
read-only, override
initialSelectedDataIndexes List<int>
List of data indexes initially selected.
read / write, inherited
innerRadius String
Inner radius of the series.
final, inherited
isVisible bool?
Visibility of the series.
final, inherited
key ValueKey<String>?
Key to identify a series in a collection.
final, inherited
legendIconType LegendIconType
Shape of the legend icon.
final, inherited
legendItemText String?
Text to be displayed in legend. By default, the series name will be displayed in the legend. You can change this by setting values to this property.
final, inherited
maximumValue double?
Specifies the maximum value of the radial bar.
name String?
Name of the series.
final, inherited
onCreateRenderer ChartSeriesRendererFactory<T, D>?
Used to create the renderer for custom series.
final, inherited
onPointDoubleTap ChartPointInteractionCallback?
Called when double tapped on the chart data point.
final, inherited
onPointLongPress ChartPointInteractionCallback?
Called when long pressed on the chart data point.
final, inherited
onPointTap ChartPointInteractionCallback?
Called when tapped on the chart data point.
final, inherited
onRendererCreated CircularSeriesRendererCreatedCallback?
Triggers when the series renderer is created.
final, inherited
opacity double
Opacity of the series. The value ranges from 0 to 1.
final, inherited
pointColorMapper ChartIndexedValueMapper<Color>?
Maps the field name, which will be considered as data point color.
final, inherited
pointRadiusMapper ChartIndexedValueMapper<String>?
Maps the field name, which will be considered for calculating the radius of all the data points.
final, inherited
pointRenderMode PointRenderMode?
Defines the painting mode of the data points.
final, inherited
pointShaderMapper ChartShaderMapper?
Returns the shaders to fill each data point.
final, inherited
radius String
Radius of the series.
final, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
selectionBehavior SelectionBehavior
Customizes the selection of series.
final, inherited
sortFieldValueMapper ChartIndexedValueMapper?
Field in the data source for performing sorting.
final, inherited
sortingOrder SortingOrder
Type of sorting.
final, inherited
startAngle int
Starting angle of the series.
final, inherited
trackBorderColor Color
Border color of the track.
trackBorderWidth double
Border width of the track.
trackColor Color
Color of the track.
trackOpacity double
Opacity of the track.
useSeriesColor bool
Uses the point color for filling the track.
xValueMapper ChartIndexedValueMapper<D>?
Maps the field name, which will be considered as x-values.
final, inherited
yValueMapper ChartIndexedValueMapper<num>?
Maps the field name, which will be considered as y-values.
final, inherited


calculateEmptyPointValue(int pointIndex, ChartPoint currentPoint, [CircularSeriesRenderer? seriesRenderer]) → void
To calculate empty point values.
createRenderer(CircularSeries<T, D> series) RadialBarSeriesRenderer
Create the Radial bar series renderer.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
toString() String
A string representation of this object.


operator ==(Object other) bool
The equality operator.